600Wh Battery Box

Description

This battery box can store up to 600Wh of energy and features an inverter to convert the 12V DC from the battery to 220v AC to power home appliances. It also features a USB port on the side for charging a phone and a wireless charger on the top of the case.

The battery is made of 90 18650 cells salvaged from broken laptop batteries. Since not all the cells have the same capacity, the packs need to be balanced. I'm using a 3S BMS for this task.
The battery can be recharged using an off the shelf LiPo charger.

Files

battery_sch.pdf Schematic of the system Adobe Portable Document Format - 54.80 kB - 04/24/2018 at 18:40		Preview

Pack Holder.stl 3D printed pack holder Holds a single battery pack to the case Standard Tesselated Geometry - 30.16 kB - 04/24/2018 at 18:38		Download

Components

90 × 18650 cells Salvaged from broken laptop batteries
1 × 12V 1000W Modified Sine Wave Inverter https://www.ebay.ch/itm/Spannungswandler-12V-1000W-6000W-Stromwandler-Solar-Inverter-Wechselrichter/371674435401?hash=item568985cf49:m:moVKN3p_tJR6n9R7ZrMxSnw
1 × 3S 150A BMS
1 × 12V LED Push Button https://www.ebay.ch/itm/142264596040?ViewItem=&item=142264596040&var=441322709257
1 × 12V 70A Relay https://www.ebay.ch/itm/131106074235?ViewItem=&item=131106074235

View all 8 components

Discussions

Ahron Wayne wrote 01/08/2021 at 04:17

Do you still use this? Nice box!

Are you sure? yes | no

Diego V wrote 01/11/2021 at 10:15

Thanks! I haven't used it for a while but it still works fine.

I might need to check the batteries before putting it under load again.

Are you sure? yes | no

600Wh Battery Box

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Description

Files

battery_sch.pdf

Pack Holder.stl

Components

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