{"id":6693,"date":"2016-07-13T09:19:21","date_gmt":"2016-07-12T23:49:21","guid":{"rendered":"http:\/\/www.solarquotes.com.au\/blog\/?p=6693"},"modified":"2017-04-18T17:33:36","modified_gmt":"2017-04-18T07:03:36","slug":"new-powerwall-warranty","status":"publish","type":"post","link":"https:\/\/www.solarquotes.com.au\/blog\/new-powerwall-warranty\/","title":{"rendered":"Tesla Quietly Release New Powerwall Warranty: But There’s One Big Problem…"},"content":{"rendered":"
\"powerwall

The new Powerwall warranty quietly introduced into Australia last month says you are not covered for ‘normal degradation’. Whatever that means.<\/p><\/div>\n

Can I interest you in buying a revolutionary new energy storage system? It is called the Brakulator 7000. It has a usable storage capacity of 6.4 kilowatt-hours<\/a> with a continuous power output of 3.3 kilowatts<\/a>.\u00a0 And the great thing is it comes with a 10 year warranty.<\/p>\n

Are you interested?<\/p>\n

However, there is just one little thing I need to mention before you buy it.\u00a0 That 10 year warranty?\u00a0 It doesn’t cover normal degradation of your Brakulator 7000’s storage capacity over time.<\/p>\n

What’s that? You want to know what \u201cnormal degradation\u201d means? Well that’s too bad, because I’m not telling you.\u00a0 Your only option is to buy it without a definition.<\/p>\n

If you are sure as hell you don’t want to buy a Brackulator 7000 without knowing what is meant by “normal degradation”, then you sure as hell won’t want to buy a Tesla Powerwall either, because its warranty, both here and in the United States, has been changed to contain exactly that phrase. I quote from the new Tesla Powerwall warranty<\/a> effective from June 21st 2016:<\/p>\n

\u201c…this Limited Warranty does not cover (a) normal degradation of your Powerwall\u2019s
\nenergy capacity over time\u201d.<\/p><\/blockquote>\n

No definition is provided for \u201cnormal degradation\u201d.<\/p>\n

I don’t have a law degree or anything, so I don’t know the proper legal term for this, but I’m pretty sure it is colloquially known as \u201cbullshit\u201d1<\/a><\/sup>.<\/p>\n

Previously The Powerwall’s Warranty Was Disappointing But Clear<\/h2>\n

Before the 21st of last month how much degradation the Powerwall’s warranty covered was clearly spelled out.\u00a0 You can read about it here<\/a> and there is a screenshot of the relevant part below:<\/p>\n

\"A

A screen capture of the original Tesla Powerwall warranty.<\/p><\/div>\n

It boils down to a promise it will provide at least 5.44 kilowatt-hours of storage for 740 cycles, followed by 4.6 kilowatt-hours of storage for 1,087 cycles, and then 3.84 kilowatt-hours of storage for technically 2,368 cycles, but its 10 year warranty period is likely to be over long before then.<\/p>\n

This warranty was disappointing because, stupid me, I actually thought Tesla might be telling the truth when they originally\u00a0promised a 7 kilowatt-hour energy storage system with a 10 year warranty.\u00a0 Such a thing was unprecedented, but they had done great things with electric cars, so I thought maybe they would also do great things with battery storage.\u00a0 I certainly wasn’t expecting them to provide a system they would only warrant an average of 4.39 kilowatt-hours over 10 years if it is cycled once per day.<\/p>\n

But at least it was possible to see what you were getting.\u00a0 More than 5.44 kilowatt-hours of storage that you could expect to dwindle as its warranty ran out.\u00a0 But you don’t even get that with the Powerwall’s new warranty.<\/p>\n

\"A

A screen capture of what you get if you go looking for the original Powerwall warranty on the Tesla site.<\/p><\/div>\n

Why The Change?<\/h2>\n

When I first read the Powerwall’s disappointing original warranty I hoped it was so lousy simply because it was early days and once they were confident they had worked out any bugs, the warranty would improve.\u00a0 I definitely did not expect it to get worse.<\/p>\n

The new warranty states the Powerwall can be cycled as many times as you like within its 10 year warranty period. That’s an improvement on the original warranty, all else being equal.<\/p>\n

Unfortunately ‘unlimited cycles for 10 years’ is not very useful if the storage capacity is worn down to an almost useless nub after only 2,000 cycles and Tesla refuses to repair or replace it because they claim that is “normal degradation”.<\/p>\n

Thankfully You Are Still Protected By Australian Consumer Law<\/h2>\n

Under Australian law<\/a> you have a right to a repair, replacement, or refund if goods you purchase are faulty, unsafe, or do not work as they should. And this regardless of whether or not the product has a warranty or if the warranty has expired.<\/p>\n

For example, if you buy a television with a 12 month warranty for $1,000 and it stops working after 13 months you still have a right to have it repaired or replaced, even though the warranty has expired.\u00a0 This is because it is reasonable to have expected a $1,000 TV to last longer than that.\u00a0 However, if you had paid $100 for the TV then you probably wouldn’t have a right to a repair or replacement because most people would not think it is unreasonable for an extremely cheap TV to break down after only 13 months.<\/p>\n

So if you purchase a Tesla Powerwall and after a few years its performance is not what could reasonably be expected, then you have a right to have it repaired or replaced. And the important thing here is Tesla does not decide what is reasonable or what \u201cnormal degradation\u201d is.<\/p>\n

In practice – if you get into a disagreement with Tesla over what ‘normal degradation’ is then you’ll be off to your local Consumer Tribunal so a magistrate can decide.<\/p>\n

Unfortunately, just what is normal degradation for a 6.4kWh shield-shaped battery pack is not clear. So if you do end up at a tribunal,\u00a0the next part of this post may be useful.<\/p>\n

What Is Normal Degradation For A Lithium-Ion Battery System?<\/h2>\n

Home energy storage is a new technology, so we don’t have a track record we can look at to determine what is reasonable performance or normal degradation.\u00a0 But we can get a good idea by looking at what sort of warranties<\/a> are being provided for other lithium-ion battery systems.<\/p>\n

Starting with the literal Mercedes-Benz of energy storage and going all the way to the lowest cost system I am aware of, the GCL E-KwBe, the warranted performance of a number of systems is shown below:<\/p>\n

Mercedes-Benz Energy Storage Home:<\/strong> 80% of nominal capacity after 8,000 cycles.<\/p>\n

SimpliPhi PHI3.4\u00a0 Smart-Tech Battery:<\/strong> 80% of nominal storage capacity after 10,000 cycles.<\/p>\n

Enphase AC Battery:<\/strong> 95% of nominal storage capacity after 7,300 cycles.<\/p>\n

LG Chem RESU:<\/strong> 80% nominal storage capacity after 2,625 cycles.<\/p>\n

GCL E-KwBe:<\/strong> 80% of nominal storage capacity after 2,000 cycles<\/p>\n

The Tesla Powerwall is definitely not the most expensive storage system, but it is certainly not the cheapest.\u00a0 I guess its cost could be described as mediocre<\/a>.\u00a0 But its original warranty, which promised at least 72% of its nominal storage capacity after 1,827 cycles, is horrible compared the budget priced GCL E-KwBe at 80% of nominal storage capacity after 2,000 cycles.<\/p>\n

So Tesla may have been better off leaving its warranty as it was in Australia.\u00a0 That way at least they could claim that people should have been aware of how poorly it might perform over time.\u00a0 But now the Powerwall’s expected performance may be based upon what is reasonable for other battery systems around its price point.<\/p>\n

I’ll Back You Up<\/h2>\n

I don’t know if I’m any kind of expert on anything. But I have written a lot about battery systems. \u00a0So I’m willing to testify on what I believe a Tesla Powerwall’s performance should be and what “normal degradation” is.<\/p>\n

It is my firm\u00a0opinion that anyone whose Powerwall performs worse than its original warranty is entitled to a repair or replacement.<\/p>\n

I’ll also state that the Powerwall’s performance should be similar to other lithium-ion battery systems of around its price point.\u00a0 It may be the worst performing one of the lot, but its performance should not be too far below the others and if it is you are also entitled to a repair or replacement.<\/p>\n

So What The Hell Are Tesla Playing At?<\/h2>\n

Personally, I don’t believe that Tesla are evil corporates who want to stiff early adopters with a ambiguous\u00a0warranty. \u00a0I do believe they want to sell lots of Powerwalls and look after their customers.<\/p>\n

I believe that Elon Musk genuinely wants to see the rapid spread of 24 hour solar power.<\/p>\n

But if that’s the case, why would Tesla burden their\u00a0early adopters with such a piss poor warranty?<\/p>\n

The only reason I can guess\u00a0at is this. Tesla realised that their original warranty was terrible and was costing them sales. Here at\u00a0SolarQuotes we’ve spoken to plenty of people that won’t go near one once they read about the warranty conditions.<\/p>\n

So I’m guessing that their legal team’s solution\u00a0was to re-word it to be as non-specific as possible. Bloody lawyers.<\/p>\n

Don’t Buy A Tesla Powerwall With This Warranty<\/h2>\n

Before Tesla changed its Powerwall warranty my recommendation would have been not to buy one unless you understood and were happy with the degradation figures in the original warranty.<\/p>\n

But now they have changed their warranty so it doesn’t define or cover “normal degradation”, my recommendation is, hell no.\u00a0 Don’t go there until they sort their warranty out. Early adopters who spend big bucks to support solar and storage\u00a0deserve better.<\/p>\n","protected":false},"excerpt":{"rendered":"

Can I interest you in buying a revolutionary new energy storage system? It is called the Brakulator 7000. It has a usable storage capacity of 6.4 kilowatt-hours with a continuous power output of 3.3 kilowatts.\u00a0 And the great thing is it comes with a 10 year warranty. Are you interested?<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[551],"tags":[578,552,647],"class_list":["post-6693","post","type-post","status-publish","format-standard","hentry","category-battery-storage","tag-powerwall","tag-tesla","tag-warranty","entry"],"acf":[],"yoast_head":"\nTesla Quietly Release New Powerwall Warranty: But There's One Big Problem... - SolarQuotes Blog<\/title>\n<meta name=\"description\" content=\"The new Powerwall warranty quietly introduced into Australia last month says you are not covered for 'normal degradation'. 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