Recently I've been building 304ah 12v lithium phosphate batteries for friends with boats, I basically take grade a matched cells, source and test battery management system, install active cell balancing, install bluetooth modules aswell as low and high temp cut offs and in some cases heating wire.
These have been a big success for my friends as they got a huge (*relative) lithium battery banks for a big saving on what they cost from the likes of Victron, and having 6000 charges means they should last over a decade rather than the year or two for lead acid. These were built into furniture like banchet seating etc. I'm yet to build one into a typical battery case.
It got my thinking that maybe I could offer this as a service. But I wasn't sure what I'd need to do in order to let me sell to the public. It's all off the shelf parts that I'm just building up for people.
If I had 10 of them on the shelf ready to sell to anyone, would it be different to me building it for a mate, or someone asking me to build for them?
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