Using e scooter batteries for powerwall

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Longbush Powerwall

New member
Joined
Aug 19, 2017
Messages
10
Hi guys. My recycler can get me an ongoing supply of used e scooter battery packs. They are the Eve brand battery with 20 in a pack, around 2500mah per battery. Has anyone used these packs for a powerwall and connected them up. They are not easy to break apart so interested if they can be used still joined up.

Cheers

Paul
 

OffGridInTheCity

Active member
Joined
Dec 15, 2018
Messages
1,801
LongbushPowerwall said:
Hi guys. My recycler can get me an ongoing supply of used e scooter battery packs. They are the Eve brand battery with 20 in a pack, around 2500mah per battery. Has anyone used these packs for a powerwall and connected them up. They are not easy to break apart so interested if they can be used still joined up.

Cheers

Paul

Yes you can. Here's youtube from @jehugarcia where he creates a busbar to plug them in 'as is': Simple DIY Powerwall using $1 LG 18650 eBay Cells -[size=small]

The problem with 20cell e-bike packs is their 36v (nominal) voltage range -which limits your choices forcharge controllers & inverters. Things are just 12v, 24v, and 48v oriented. However,beyond having to search for voltage rangecompatible equipment - there's no technical issue with a 36v battery bank :)
 

ajw22

Member
Joined
Nov 16, 2018
Messages
641
You also need to consider why they landed at the recycler in the first place. From my experience, such packs often have 1 or more bad cells.

Also, if it has separate charging and discharging connectors, tying multiple batteries together in parallel may be a very bad idea. Depends on the BMS.
 

Longbush Powerwall

New member
Joined
Aug 19, 2017
Messages
10
Thanks guys for your feedback. May try recovering them from the packs instead. They seem to be eve batteries and the handfull I have tested came in around 2600 mah.

Paul
 
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