So I'm just starting my journey, and looking for direction. Which way to go and what do I need? Got some ideas as seen quite a few vids now. Just started to harvest laptop cells. Got a opus BT-3100 charger/tester and a imax b6 balance charger. Then suddenly got my hands on 250 x Bosch indego Li-ion 32.4v, 3Ah, 97.2Wh battery's cheep (i think). Brand new from discontinued line of robot lawn mowers. Each pack has 18 x samsung INR18650-15Q 1500mAh 18650s. What should I do now. power wall maybe. How do i test/charge this pack. Should I keep them together or break them apart. What other equipment do I need to get? Grabbed them with out much thought, hope I did The right thing. Looks like I'll have to sort some kind of BMS and balance leads for 9s2p pack, and imax only does 1-6 cells I believe, unless i brake up the packs. Any suggestions would be most welcome.