Posts: 1
Joined: Sun Mar 13, 2022 1:03 am

Re: i3 HV Battery Upgrade

I would be interested in any upgrade seeing as my warranty will expire in June of this year and I'm not below the 70% threshold for replacement.
Posts: 1
Joined: Thu Apr 21, 2022 4:45 am

Re: i3 HV Battery Upgrade

Can I offer an alternate product suggestion?

The i3 platform has a reasonably large amount of space allocated for the REX engine/generator unit. On BEV i3s, that space is simply empty. The worst kind of empty too, because BMW didn't even let you use it for storage - it's just open space underneath the car.

If you could manufacture a supplementary battery that fits in that space, which works in conjunction with a factory battery to increase the range, you'd really be on to something. It'd be smaller, take fewer cells, and be more widely applicable than an entire main battery replacement.

An electrically different option could be a battery-based pseudo-REX - a drop-in replacement battery pack that pretends to be a REX to fool the computer. Then anyone who has a REX engine failure, or who just wants to change to a BEV, could remove the gas engine, install the new battery unit in its place, and enjoy a few extra miles of all-electric range. The car would just think it still has the REX, and switch it "on" when the main battery pack was low.
Posts: 1
Joined: Thu Aug 25, 2022 3:01 am

Re: i3 HV Battery Upgrade

I hope that more 3rd-party battery pack builders start producing replacement packs for the i3 and other EV's as has happened with some gasoline-electric hybrid vehicles. However, the engineering challenges are significant. If these aren't handled well, a 3rd-party pack could be disappointing.
install vidmate
Posts: 1
Joined: Sun Aug 28, 2022 10:41 pm

Re: i3 HV Battery Upgrade

Does anyone know. This upgrade still averrable? I live in San Jose, CA, USA. Where I can install it?
Posts: 18
Joined: Tue Nov 15, 2016 12:44 pm

Re: i3 HV Battery Upgrade

$21.3K for 260 miles ... plus the cost of the i3 much is a Tesla Model 3 again? I think these upgrades would make sense if they were about 30% less costly. If an older i3 costs about $10k and it could have 260 miles of range for about $32k total, this makes good sense in my opinion.

Generally newer is better, so I would be surprised to see anyone buying an older car to upgrade its batteries for the same or greater expense...when they could just pick up a newer car and get the same range and the peace of mind knowing someone did not partly disassemble their car and reassemble it which on its own creates a risk for mechanical issues.

Also would an insurance company insure these packs...etc?

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