A123 Lifepo4 battery bank build part 1
Автор: AndyCanFixIt!
Загружено: 2020-12-28
Просмотров: 6640
Описание:
Building a 48 volt battery bank with A123 lifepo4 26650 cells from medical batteries. I build this bank using medical battery packs I purchased from Batteryhookup.com. Purchased with my own funds using David Poz discount code for 10% off.
Link to the batteries. They are out of stock at this time but come back from time to time.
https://batteryhookup.com/products/a1...
Link to more specs on these cells.
https://www.batteryspace.com/a123-lif...
Link to the desoldering pump I use
https://www.amazon.com/gp/product/B00...
This is a 60 amp hour pack I am building to expand my existing 100 amp hour pack to 160 amp hours or about 8.5 kilowatt hours of storage. Not including wire I already had, its about $500 for this 60 amp hour pack and I spent about $800 on the existing 100 amp hour pack so $1300 total for a 160 amp hour 48 volt pack with BMS.
Link to the BMS I used on both of my battery builds. I used the 400 amp version without the LCD. Paired to an old smartphone. $112 for the BMS, handles a max charge rate of 50 amps.
https://www.ebay.com/itm/Smart-Lifepo...
You will need a T10 bit with a narrow shaft at least 2.5 to 3 inches long in order to disassemble the packs. I use 14 gauge wire for the parallel wiring and 10 gauge wiring for the connections on each pack tying them all together, all wires cut to equal lengths.
In my setup at full load each pack in parallel will only see about 7 amps draw at max output of my inverters, while each pack can easily handle up to 50 amps continuous so they have a very light load. Charging with the BMS maxes out at 3 amps per each of the 16 packs max, also a very light load. Between my two banks I can take a max charge rate of 5.4 kilowatts, that will expand to about 8kw next year when I further expand my battery bank. I'll post the second part later this week on completing the build.
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