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Solar Battery Storage Comparison Table

Last Updated: 22nd Sep 2018

Discover solar battery prices and system specifications with our regularly updated solar batteries comparison table. See which energy storage system may be best for your home or business.

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New Feature: If a solar battery storage product comes in multiple capacities, click/tap the down arrow in the blue header to see and select available energy storage capacities for that system.

 

Product Name LG Chem Resu 10 LG Chem RESU 6.5 Redflow Zcell SimpliPhi PHI3.4 Smart-Tech battery SunGrow SBP4K8  Leclanche Apollion Cube Soltaro 2 Soltaro 4.5 GCL E-KwBe 5.6 Arvio Sirius Capacitor Module Delta Hybrid E5 Sonnenschein @ Home Lithium ELMOFO E-Cells ALB52-106 Akasol neeoQube BYD B-Box LV Fronius Solar Battery PowerPlus Energy LiFE series 48V DCS PV 10.0 DCS PV 13.5 SolaX 3.3  SolaX 6.5 BMZ ESS3.0 Pylontech US2000B Aquion Aspen 48S-2.2 Tesla Powerwall 2 Trinabess Powercube SolarWatt MyReserve Matrix Hybrid "Home" Plus Hansol AIO 10.8 Hansol AIO 7.2 VARTA Pulse 3 VARTA Pulse 6 Enphase AC Battery Magellan HESS Sonnenbatterie Eco 9.43 Opal Storage Senec.home Li 10 ZEN Freedom Powerbank FPB16 SolaX Power Station Sunverge SIS Alpha-ESS ECO S5 Fusion Power Systems Titan-3
Product Image LG Chem Resu 10 New LG Chem RESU 6.5 Redflow ZBM-2 SimpliPhi PHI3.4 Smart-Tech battery SunGrow SBP4K8 Leclanche Apollion Cube Soltaro Soltaro 4.5 GCL EKwbE 5.6 ARVIO Delta Hybrid E5 Sonnenschein ELMOFO E-Cells ALB52-106 Akasol neeoQube B-BOX Fronius Solar Battery powerplus energy DCS PV 10.0 DCS PV 10.0 SolaX 3.3 SolaX 6.5 BMZ ESS3.0 Pylontech US2000B aquion battery Tesla Powerwall 2 Trina Powercube SolarWatt MyReserve Hybrid 'home' Hansol AIO 10.8 Hansol AIO 7.2 VARTA VARTA Enphase AC Battery Magellan HESS Sonnen Eco 9.43 Opal Storage Senec.home Li 10 ZEN Freedom Powerbank SolaX Power Station Sunverge SIS Alpha-ESS ECO S5 Fusion Power Systems Titan-3
In Depth Analysis? Yes, here. Yes, here. Yes, On-grid and Off-grid. Yes, here. Not yet. Not yet. Not yet Not yet Yes, here. Yes, here. Not yet. Not yet  Not yet. Not yet. Yes, here. Not yet. Not yet. Yes, here Yes, here Not yet Not yet Not yet. Not yet. Yes, here. Yes, here. Not yet. Not yet. Not yet. Yes, here. Yes, here. Not yet Not yet Yes, here. Not yet. Yes, here. Not yet. Not yet. Not yet. Not yet. Not yet. Not yet. Not yet.
Battery Type Lithium-Ion (NMC) Lithium-Ion (NMC) Flow (Zinc-Bromide) Lithium-ion (Lithium Iron Phosphate) Lithium-Ion (NMC) Li-Ion (NMC) Lithium Ion (Lithium Iron Phosphate) Lithium Ion (Lithium Iron Phosphate) Lithium-Ion (NMC) Graphene super capacitor with a lithium ion electrode Lithium-Ion Lithium-Ion (NMC) Lithium Ion Lithium Ion (Lithium Iron Phosphate) Lithium-ion (Lithium Iron Phosphate) Lithium-ion (Lithium Iron Phosphate) Lithium-Ion (Lithium Iron Phosphate) Lithium-Ion (Lithium Iron Phosphate) Lithium-Ion (Lithium Iron Phosphate) Lithium Ion (NMC) Lithium Ion (NMC) Li-Ion (NMC) Lithium-ion (Lithium Iron Phosphate) Aqueous Hybrid Ion Lithium Ion (NMC) Lithium Ion (Lithium Iron Phosphate) Lithium Ion Lead Crystal Lithium Ion Lithium Ion Lithium-Ion (lithium-mananese-cobalt-oxide) Lithium-Ion (lithium-mananese-cobalt-oxide) Lithium Ion (Lithium Iron Phosphate) Lithium-Ion (lithium-mananese-cobalt-oxide) Lithium-ion (Lithium Iron Phosphate) Lithium Ion Lithium-Ion (lithium-mananese-cobalt-oxide) Lithium-ion (Lithium Iron Phosphate) Lithium Ion (NMC) Lithium-Ion (Lithium Iron Phosphate) Lithium-ion (Lithium Iron Phosphate) Aqueous Hybrid Ion
All In One unit? No No No No No No No No No No No No No No No No No No No No No No No No Kind of. Includes AC battery inverter but requires solar inverter. Kind of. Includes AC battery inverter ("Powerbox") but requires solar inverter. Kind of. Includes battery inverter (black "Command" unit) but requires solar inverter. Yes Yes Yes Yes Yes Yes (includes microinverter – requires 1 Envoy-S comms unit per install) Yes Kind of. Includes AC battery inverter but requires solar inverter. Yes Yes Yes Yes Yes Yes Yes
Price excluding installation (Estimated Retail pricing in AUD incl. GST, unless stated otherwise) $7,655 $5,807 $12,600 $4,700 $3500 $9200  $1,700 $4,200 $3,650 $4,686 $6,600 $10,109 $8,190 $12,000 $8,734 $15,550 TBD $8,900 $9,990 $5,390 $6,864 $7700  $1,999  $2,200  $9,600 (includes "Telsa Gateway") $9,790 (includes $550 charge for extended Powerbox battery inverter warranty) TBD $11,000 $13,540 $11,550 TBD TBD $2,000 (fully installed) $20,600 $16,500 $12,000 $15,202

$21,750 (fully installed)

 

$11,616

$26,000 (Fully installed) 

$12,375 $13,750
Nominal Storage 9.8kWh 6.5 kWh 10 kWh 3.4kWh 4.8 kWh 6.7kWh 2kWh 4.5kWh 5.6kWh 3.55kWh 6kWh 8.5kWh 5.5kWh 5.5kWh 10.24 kWh 12kWh 3.3 kWh 10.42kWh 13.52kWh 3.5kWh 6.8kWh 6.74kWh 2.4kWh 2.2kWh 14 kWh 9.6kWh 11kWh 9.84kWh 10.8 kWh 7.2 kWh 3.3 kWh 6.5 kWh 1.2kWh 12.8 kWh 15kWh 13 kWh 10 kWh 16 kWh  13 kWh 11.6kWh 14.4 kWh 8kWh
Usable Storage Capacity 8.8kWh 5.9 kWh 10 kWh 3.4kWh (or 2.75kWh if you are cycling at 80% DoD as per warranty document) 4.56 kWh 5.4kWh  1.8kWh 4.05kWh 5.6kWh 3.55kWh 4.8kWh 6.8kWh 4.4kWh 4.95kWh 9.8 kWh 9.6kWh 2.48kWh 10.42kWh 13.50kWh 3.3kWh 6.5kWh 5.4kWh  1.92kWh  2.2 kWh  13.5 kWh  8.64kWh 11kWh 8.2kWh 9.72 kWh 6.48 kWh 3 kWh 5.85 kWh 1.2kWh  11.52 kWh 13.5kWh 11.7 kWh 10 kWh 14.4 kWh 12.35 kWh 9.86 kWh 12.96 kWh 8kWh
Pros Can be used in both off-grid and hybrid setups, compact size, modular expansion. Can be used in both off-grid and hybrid setups, compact size, modular expansion. Safe chemistry (low fire danger compared to lithium ion batteries), high depth-of-discharge, can tolerate temperatures up to 50 degrees C, easily recycleable, Australian owned & developed American made, can be used in both off-grid and hybrid setups, compact size, modular expansion, 10 year warranty, very high cycle life, BMS integrated into each battery Simple setup for multiple batteries; One-click online firmware update;
Robust BMS provides multi-protection at both cell level and system levell;
Smart hibernation technology to maintain battery state of health;
 
German made, high quality solar battery storage, plug and play with SMA sunny island, expandable up to 12 modules Modular Design, IP65, Expandable Modular Design, IP65, Expandable Low cost, comes in multiple colours, lightweight Unlimited cycles in warranty period, no capacity degradation at 100% DoD Module made in Japan. Can be used in both off-grid and hybrid setups, modular expansion (up to 2 batteries per inverter). System, cell and cabinet have multiple safety features. Cabinets can be stacked in parallel for up to 102 kWh of storage Can be used in both off-grid and hybrid setups, capable of a high rate of discharge, easy expansion,  intelligent BMS (Battery Management System), developed in Australia using Kokam cells German made, high cycle life and depth of discharge, 10 year warranty High cycle life, high power output High cycle life, good power output Australian designed and engineered. Australian engineered, rebuildable design, super charging capable BMS, wide operating temperature range, very high cycle life, IP67 fully sealed design   Australian engineered, rebuildable design, super charging capable BMS, wide operating temperature range, very high cycle life, IP67 fully sealed design   Price includes Solax SK-SU5000E inverter, batteries made by LG Price includes Solax SK-SU5000E inverter, batteries made by LG High quality German made battery, plug and play with SMA sunny island, expandable up to 12 modules, and high 8kW continuous discharge power + surge.  Safest Lithium Chemistry, Scalable, Integrated BMS, good cost-per-kWh Great price-per-kWh, modular, environmentally friendly disposal, inherently safe chemistry (low fire risk compared to lithium ion), also available in a 24V version (Aspen 24S-83), which enables use of lower cost inverters and chargers. Advanced safety features minimise fire risk, extremely competitive price, impressive warranty Designed to be retrofitted to existing solar panel installations, scaleable Designed to be retrofitted to existing solar installations, scaleable Unique technology, inherently safe battery chemistry All in one with Samsung batteries. Easy to install. All in one with Samsung batteries. Easy to install. Ease of installation Ease of installation Simple installation, easy to add more batteries to increase storage capacity.  Australian owned and developed, Reposit Ready, has backup capability, rugged design for Australian environment, can be expanded to up to 19.2 kWh Made in Germany,  long cycle life, great warranty Fast installation, Reposit ready, has backup capability if grid goes down, LG Chem battery technology inside, all DC and AC protection devices prewired  Made in Germany, 100% DoD, long cycle life Good power output, designed for totally off-grid usage TBD Has backup capability if grid goes down, extremely high surge power (8.5kW for 30 minutes), very long lifespan.  High cycle life and depth of discharge, relatively compact size battery. Environmentally friendly disposal, inherently safe chemistry (low fire risk compared to lithium ion), high depth-of-discharge
Cons Battery is warranted to 45ºC ambient  Battery is warranted to 45ºC ambient  Heavy. Question mark over DC-DC roundtrip efficiency (~80%). Requires a maintenance cycle once a week or so that takes the battery offline for a few hours.  Relatively expensive Only compatible with the Sungrow SH5K hybrid inverter Supported by limited number of inverters TBD TBD Low cycle life TBD Designed to work only with Delta's E5 inverter, no warranty document available Expensive, compatible with limited range of inverters No warranty document available Only compatible with SMA inverters, expensive, no warranty document available High power output is limited by solar inverter Can only be installed indoors, relatively short warranty compared to other lithium-ion batteries, expensive. 3 Phase only,  TBD TBD TBD Only compatible with SolaX inverters, cannot connect with SolaX 6.5 batteries Only compatible with SolaX inverters, cannot connect with SolaX 3.3 batteries Supported by limited number of inverters Only 5 year warranty, currently only compatible with SolaX Power Hybrid inverters and Redbacks. Heavy, low power output compared to lithium-ion unless many battery stacks are purchased and linked together (increasing overall costs).
 
Long wait times. Like 6 months long. $550 extra charge to apply the full 10 year warranty to the Powerbox battery inverter 10 year warranty does not include Command battery inverter Relatively low cycle life compared to other battery types, heavy The system, apart from the batteries, only has a 5 year warranty. The system, apart from the batteries, only has a 5 year warranty. Very tight ambient temperate operational range  Very tight ambient temperate operational range  Very low power output per battery Heavy, expensive initial cost, battery performance and DOD is benchmarked against a low temperature (25 deg C) Relatively low power output – max 3.3kW TBD Relatively low power output (2.5kW) Battery warranty is 10 years but the control system is only warranted for 5 years  Heavy

Heavy

Heavy Very heavy
Weight 75kg 52kg 290kg 38 kg (per individual battery module) 48kg 95kg per module 33kg 38kg 47.5kg 73kg 75kg 97 kg 41kg 62kg 205 kg 176kg 39kg 97kg 125kg 25.5kg 44kg 95kg 27kg per battery 118kg per stack 125kg 95kg 140kg 300kg 239 kg  194 kg 45kg 65kg 25kg ~260kg 200kg 240kg 150kg TBD 235 kg 300 kg 180kg 614kg
Power 5kW steady, 7kW peak (3 seconds) 4.2kW steady, 4.6kW peak (for 3 seconds) 3kW steady, 5kW peak 1.5kW steady (48v version) 0.75kW stead (24v version) 3kW 3.3kW steady, 6.5kW peak 2kW per module 4.5kW per module 3kW steady 4.8kW steady, 12kW peak 3kW steady 7kW steady (limited to 5kW on grid) 5kW steady, 40kW peak 5kW 10 kW steady 4kW steady TBD 5.12kW continuous / 10.24kW peak (10 mins) 7.5kW continuous / 15kW peak (10 mins) 3.2kW 6.5kW 8kW steady, 16kW 3sec peak 2kW continuous per module (stacks with each additional module) 0.68kW steady, 1kW peak (stacks with each additional 2.2kWh pack) 5kW steady, 7kW peak (10 seconds) 3kW steady 2.5kW-4kW steady, 4kW peak 3kW steady, 5kW peak 6.6 kW steady 6.6 kW steady 1.6kW 2.5 kW 260W per battery (stacks with each additional battery) 5kW steady 3.3kW 4.6kW 2.5kW 5kW 4.6kW  5kW steady, 8.5kW peak 5kW steady 3.5kW steady
Dimensions (WHD) 45cm x48cm x 23cm 45cm x 65cm x 12cm 50cm x 115 cm x 100cm 34 cm x 35 cm x 20 cm 51 cm x 56 cm x 19 cm 67cm x 53cm x 47cm  41cm x 38cm x 18 cm 41cm x 58cm x 18cm 53cm x 17cm x 70cm 60cm x 20cm x 53cm 55 cm x 59cm x 20cm 64 cm x 46 cm x 49 cm 37cm x 23cm x 32cm 46 cm × 46 cm x 28 cm  62cm x 172cm x 32 cm 57cm x 95cm x 61cm 62cm x 43cm x 8cm 45cm x 91cm x 28cm 52cm x 96cm x 30cm 33cm x 44cm x 11cm 58cm x 44cm x 11cm 64cm x 45cm x 42cm  44cm x 9cm x 41cm 33cm x 93 cm x 31cm 115 cm x 75 cm x 15cm 60cm x 100cm x 21cm 38 cm x 23 cm x 26 cm (per Myreserve unit) 60 cm x 140 cm x 40 cm 140 cm x 28 cm x 120 cm 140 cm x 28 cm x 120 cm 60cm x 69cm x 19cm 60cm x 69cm x 19cm 39cm x 32.5cm x 22cm 70cm x 180 cm x 65cm 67cm x 186cm x 23cm 75cm x 155cm x 41cm 53cm x 112cm x 40cm 80cm x 180cm x 58cm 75 cm x 157 cm x 36 cm 86cm x 186cm x 36cm 60cm x 116 cm x 60 cm 81cm x 185cm x 70cm
Round Trip Efficiency 95% 95% 80% 98% 95% 97% 97% 97% 95% 96% 96% 95% 96% 98% TBD >90% TBD 98% 98% 95% 95% 97% TBC 90% 90% 94% 92% 92% 90% 90% TBD TBD 96% 97% 95% 95% 95% TBD 94% 96% 95% 94%
Off-grid Capable? Yes Yes Yes Yes Yes Yes, with Sunny Island or Struder inverter/charger Yes, depending on inverter Yes, depending on inverter Capable, but designed for on-grid Yes Yes Yes Yes Yes TBD Yes TBD Yes Yes Yes, but only with off-grid products approved by LG Yes, but only with off-grid products approved by LG Yes, with Sunny Island EPS capable with SolaX Power inverters Yes Yes TBD TBD Yes Yes Yes No No No No TBD Yes, Emergency Power Supply for backup up to 4kW Backup only Yes – designed specifically for it Back-Up Capability (Not for Off-Grid) Designed for on-grid use, but grid-backup option available for $899 Yes TBD
Designed for indoor or outdoor installation? (IP rating) Indoor/Outdoor (IP 55) Indoor/Outdoor (IP 55) Can be installed indoors, but outdoor installation is recommended (IP 43) Indoor (IP 32) Indoor/outdoor (IP 55)  Indoor (IP 21) Indoor/Outdoor (IP65) Indoor/Outdoor (IP65) Indoor (IP54) Indoor (IP unknown) Indoor/outdoor (IP 55) Indoor (IP21) Indoor (IP 21)  Indoor (IP 50) Indoor/Outdoor (IP 55) Indoor (IP 20) Indoor (IP40) Indoor/Outdoor (IP 67) Indoor/Outdoor (IP 67) Indoor (IP 20) Indoor (IP 20) Indoor (IP 21) Indoor (IP 20) Indoor (IP 22) Indoor/Outdoor (IP 67 for battery and electronics,  IP56 for wiring) Indoor/Outdoor (IP 54) Indoor (IP20) Indoor/Outdoor (IP 55) Indoor (IP 54) Indoor (IP 54) Indoor (IP33) Indoor (IP33) Indoor (IP 20) Indoor/Outdoor (IP 54) Indoor (IP 30) Indoor/Outdoor (IP54) Indoor (IP 30) TBD Indoor/Outdoor (IP 54) Indoor/Outdoor (IP 54) Indoor (IP 21) Indoor/Outdoor (IP 56)
Operating temperature range -10°C to 45°C -10°C to 45°C 10°C to 50 °C 0° to 49°C -10°C to 45°C 0°C to 45°C -20°C to 55°C -20°C to 55°C -20°C to 50°C -10°C to 55°C 0°C to 50°C 0°C to 45°C 0°C to 45°C 0°C to 40°C 0°C to 50°C 5°C to 35°C 0°C to 55°C -5°C to 45°C -5°C to 45°C -10°C to 45°C -10°C to 45°C 0°C to 45°C 0°C to 50°C -5°C to 40°C -20°C to 50°C -10°C to 50°C 0°C to 30°C 1°C to 40°C -10°C – 45?C -10°C – 45?C 5°C to 30°C 5°C to 30°C -20ºC to 45ºC 0?C – 45?C -5°C to 45 °C -10°C to 45°C 0°C to 40 °C TBD -10°C to 45°C -20°C to 50°C 0°C to 40°C -5°C to 50°C
Warranty 60% capacity at 10 years or 30,000 kWh throughput whichever comes first 60% capacity at 10 years or 20,000 kWh throughput whichever comes first Warranted total energy throughput 36.5MWh or a maximum of 10 years, whichever comes first.  10 years 10 years 7 years 10 years 10 years

7 years and 75% nominal capacity.

(87% after 2 years)

10 years 10 years 10 years 10 years – if registered and connected to the E-Cells portal. If not, warranty is 5 years or 4,000 cycles, whichever comes first 10 years 10 years 5 years if battery purchase is registered with Fronius within 30 days, otherwise 2 years. TBD 10 years 10 years 10 years 10 years 10 years 5 years product warranty 5 years full warranty, 3 extra years partial warranty 10 years 10 years 10 years for battery, 5 years for Command unit 5 years, optional extra 5 year warranty 5 year full warranty, 10 year battery performance warranty 5 year full warranty, 10 year battery performance warranty 7 years 7 years 10 years 5 year inverter warranty, 10 year battery warranty 10 years or 10,000 cycles, whichever comes first 5 year inverter warranty, 10 year battery performance warranty 10 years 5 year inverter warranty, 10 year battery warranty 5 year inverter warranty, 10 year battery warranty 10 years 5 years product warranty, 10 years battery performance warranty (extendable to 20 years) 8 years on full system including enclosure, inverter, charge controller and batteries
Warranty Document Supplied? Yes Yes Yes Yes Yes No Yes Yes Yes Yes No Yes No No Yes Yes No Yes Yes Yes Yes No No No Yes Yes No No Yes Yes No No Yes No Yes Yes (Cabinet, battery, inverter) Yes No No Yes Yes No
Spec sheet supplied? Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes TBD TBD Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes TBD Yes Yes Yes Yes
Compatible with what hybrid inverter brands? (Non-All In One units only) SolaX, SunGrow, Redback, Goodwe, Ingeteam, Selectronic SolaX, SunGrow, Redback, Goodwe, Ingeteam, Selectronic Victron, Goodwe, Selectronic, Redback, Telco Any inverter than can handle 48 volt lithium batteries.  (Less powerful 24 volt version also available.) Sungrow TBD SolaX, Sofar, Most CANBUS BMS SolaX, Sofar, Most CANBUS BMS Goodwe and Sungrow Any inverter with voltage control for 45 to 54V operation Delta inverters only SMA and Selectronic TBD SMA only Goodwe, Victron Fronius only TBD Any inverter than can handle 48V  Any inverter than can handle 48V  SolaX only SolaX only TBD SolaX, Redback, Sungrow

Selectronic, Redback, Solax, Goodwe, Outback, Schneider, Fronius, ABB

TBD Trina's PowerCube battery inverter only TBD N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
AC or DC coupled? (All In One systems only) N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A AC coupled AC coupled DC coupled TBD DC coupled DC coupled AC coupled AC coupled AC coupled AC coupled AC coupled or DC Coupled with 3-phase hybrid variant DC Coupled, can turn to AC Coupled using Reposit AC coupled AC coupled DC coupled (Primary) AC coupled (Optional) AC coupled AC coupled TBD
Total warranted kWh (1 cycle per day) 24,300 16,100 36,500 11,177 TBD 13,797 6,570 14,782 11,994 12,957 12,600 25,000 16,060  18,067 25,600

17,520

TBD 38,033  49,275 9.600 19,200 19,710 3,504

4,015 (based on 5 yr warranty)

37,800 (assuming most people will want to use 'other applications' such as off peak charging and Reposit) 22,450  TBD 14,965 34,300 22,600 7,665 14,946 4,161

21,024

49,275 40,000 36,500 26,280

TBD

35,989 23,652 23,360
Cost per Total warranted kWh (1 cycle per day) $0.31 (+ inverter cost) $0.36 (+ inverter cost) $0.35 (+ inverter cost) $0.42 (+ inverter cost) TBD $0.67 (+ inverter cost) $0.26 (+ inverter cost) $0.28 (+ inverter cost) $0.30 (+ inverter cost) $0.36 (+ inverter cost) $0.52 (+ inverter cost) $0.40 (+ inverter cost) $0.51 (+ inverter cost) $0.66 (+ inverter cost) $0.34 (+ inverter cost) $0.89 (+ inverter cost) TBD $0.24 (+ inverter cost) $0.20 (+ inverter cost) $0.56  $0.36  $0.39 (+ inverter cost) $0.57 (+ inverter cost) $0.55 (+ inverter cost) $0.25 (+ inverter cost) $0.31 (+ inverter cost) TBD $0.74 $0.74 $1.07 TBD TBD $0.48 $0.98 $0.34 $0.30 $0.42 $0.83 TBD $0.72 $0.52 $0.59

We plan to update this table frequently as more business and home energy storage systems become available, and specs and prices of existing solar batteries change.

Please note that system pricing is our best estimate of retail prices incl GST, unless specifically noted otherwise. But it is only an estimated cost. 

Please read this if you are not 100% certain what a kWh is, or the difference between a kW (kilowatt) and a kWh (kilowatt-hour): What does kWh stand for?

Usable Storage Capacity (kWh)

The energy stored in a solar battery system that can actually be used. In most cases this is less than the nominal storage capacity.

For example, the Enphase AC battery has a total storage capacity of 1.2kWh. But as only 95% of that stored energy can be discharged (aka a 95% Depth Of Discharge) they battery's usable capacity is really 1.1kWh.

Battery Power (kW)

A solar battery's power is how fast it can be charged or discharged.

For example, an Enphase AC battery is a low power battery system (also known as an 'energy' battery) because it takes 4 hours and 23 minutes to discharge all its usable energy, while the BMZ ESS is a high power battery because it can discharge all its usable energy in under 40 minutes.

A high power home battery system isn't necessarily more desirable than a low power battery – your household's unique energy usage needs will determine how much power you will require from a solar battery and the best energy storage solution for you.

All In One Unit

This means the system includes batteries, a battery management system (BMS), and an inverter. The Sunverge SIS is one example of an all-in-one storage system.

If a battery management system and/or inverter have to be purchased separately, this will add to the total cost of the system.

Warranty Document Supplied?

Links to a warranty document if it is available.  Don't buy a solar battery system until you have read the latest release of the warranty document direct from the supplier. They change often and we can't guarantee the linked version we provide above is the latest.

Total Warranted kWh (1 Cycle Per Day)

If you only discharge the battery once per day (most likely for larger solar batteries in residential situations) then the warranty period may expire well before the warranted kWh are all used up.  

The number of kilowatt-hours (kWh) a home battery system can discharge per day is multiplied by the number of days in the warranty period to get the figures for this row.

Cost Per Warranted kWh (1 Cycle Per Day)

This is the solar battery price (excluding installation) divided by 'Warranted kWh (1 cycle per day)'. If you discharge the battery approximately once per day, this number indicates what energy storage system may be the most cost effective in your circumstances.

A Note On Battery Warranties

Some solar batteries in the table have different warranties for components within the unit. For example, some "All in one" battery storage systems warrant the batteries for 10 years but the internal inverter only has a warranty of 5 years.

We use the 'weakest link' warranted figure (so in the above example, 5 years instead of 10 years) when calculating the cost per warranted kWh.

Disclaimer: We are only human. Although we try really hard to review the information in this comparison table up to date and accurate, mistakes could have been made and prices and other figures can go out of date quickly. Check with battery manufacturers before making any solar storage purchase decisions based on information provided this table.

>> Next: How to buy a hybrid (solar + battery storage) system >>

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