GivEnergy 9.5kWh battery warranty

Section 5 of the Battery Warranty Pack 2022 v3 states 'Energy Retention - 70% within 10 years of the initial installation date' which sounds good.

However, they give a caveat 'When used with originally installed inverter and charge/discharge rate of 0.5C (Maximum 2.5kW)'. Max 2.5kW would be fine with a smaller battery and 0.5C is reasonable with any battery but 'Max 2.5kW' with a GE 5kW inverter and 9.5kWh battery which is rated to charge/discharge at 3.6kW is not reasonable. I'm not sure it is even possible to prevent the inverter charging/discharging at more than 2.5kW.

Is this caveat a legacy from earlier warranties when 5.2kWh was their maximum battery size?

If not, Energy Retention could drop to, say, 30% after 3 years and GivEnergy could reject a warranty claim if the battery had been charged or discharged at more than 2.5kW at any time

hi
Which document are you referring to please

Warranty Doc - https://kb.givenergy.cloud/article.php?id=55&oid=16

Ok so I reckon the "(excludes 8.2kWh & 9.5kWh)" in the capped limit of operation applies. The smaller batts are limited to charge/discharge at 0.5C anyway.

Bobbles Ok so I reckon the "(excludes 8.2kWh & 9.5kWh)" in the capped limit of operation applies.

I don't think I'd read it that way - it's footnote 1, which is on the energy retention row of the table.

Could it be interpreted as "retention is 70% when measured using original inverter at a maximum discharge rage of 2.5kW" ? (ie if you pull at 3.6kW you might measure less than70% retention, but still have 70% retention if you discharge at 2.5kW.)

At what rate does it charge/discharge when calibrating ? It would seem a bit naughty if the calibration process itself invalidated the warranty.

It's a thought @DD but surely it has to be an oversight in the wording or it would be akin to, Congrats on your new Tesla we've got you covered...if you stay under 30mph.

Original inverter requirement could also be a problem: if the inverter had a manufacturing defect and was replaced after a few weeks, do you also immediately lose the battery guarantee. Perhaps they just mean the original inverter version.

Bobbles It's a thought @DD but surely it has to be an oversight in the wording or it would be akin to, Congrats on your new Tesla we've got you covered...if you stay under 30mph

Indeed - but I would prefer to have it corrected if that is the case. What is the best way to draw GE's attention to this thread?

COMPENSATION SCHEME section is always a worry; if they can't fix it or replace then you only get a discount on a new purchase.

Only a 5% discount on a new purchase if it gives up in the 10th year, and they don't have any around to replace/fix.