[catphish]

In order to test my inverter setup (before spending serious money on LiFePO4) I am looking for some cheap (but safe) cells to make up a low capacity test pack.

I have seen plenty of Prius batteries available (28 x 7.2v 6.5ah NiMH modules) and was considering making up a pack from these (40 modules series, 288v, 2 modules in parallel, 13ah). Does anyone know how much current these modules can safely provide?

 

[zaxxon]

In order to test my inverter setup (before spending serious money on LiFePO4) I am looking for some cheap (but safe) cells to make up a low capacity test pack.

I have seen plenty of Prius batteries available (28 x 7.2v 6.5ah NiMH modules) and was considering making up a pack from these (40 modules series, 288v, 2 modules in parallel, 13ah). Does anyone know how much current these modules can safely provide?

Based on attached and some personal experience. Modules are capable of around 100A for 10 seconds. So a parallel pack 200A.

Where are you located, I might have what your thinking about, if you live near Indiana and could do local pickup.

View attachment batterygenIIIprius6063.pdf

 

[major]

Charging Ni cells in parallel can result in thermal runaway. So be careful.

major

 

[catphish]

Charging Ni cells in parallel can result in thermal runaway. So be careful.

Just read up on this, and you're absolutely correct, running these in parallel is a terrible idea. I'll come up with a better solution, perhaps just 1S of these for my immediate testing requirements.

Based on attached and some personal experience. Modules are capable of around 100A for 10 seconds. So a parallel pack 200A.

Thanks, this is very useful, 100A is all I need for now.

Where are you located

I'm in the UK, it would be a very long swim to get them I'm afraid.