Hackaday Prize 2022: A Backup Battery Pack

These days, we’re all operating all over toting smartphones and laptops that could constantly use a bit additional demand. Moveable battery packs have grow to be well-liked, and [Anuradha] has developed just one that packs a lot of juice to preserve every little thing humming.

The pack is designed to be charged through photo voltaic panels, at 18 V and up to 5 A of present. It’s intended to work with a Highest Ability Level Monitoring module to make certain the maximum electrical power is acquired from the sunshine offered. For storage, the pack relies on 75 unique 18650 lithium cells, arranged with 3 cells in collection, every single with 25 in parallel (3s25p). They’re place welded together for energy and excellent conductivity. Nominally, the output voltage is on the order of 10-12 V. The provided battery administration system (BMS) will allow for an output present-day up to 100 A, and the pack can be applied with an AC inverter to electric power regular dwelling appliances.

Total, it is a tidy pack that’s far more than able of trying to keep a handful of devices charged up for days at a time. If you are developing one thing equivalent on your own, even though, just be confident to deal it nicely and preserve it guarded. So quite a few lithium batteries can rapidly switch fiery if a thing goes improper, so shop and use it properly! Panic not, on the other hand – we’ve acquired a guideline on how to do just that.