I was trying to answer the question you asked. You haven't told us anything about size or shape requirements or what you are trying to do.
NiCads - you were lucky - we used to dream of owning NiCads .....If you ever had to put up with the short life-span of NiCads...they were really a rip off.
2AH and smaller:
AFAIK 18650 cells reuire just the same protection asany LiPO. As with other packages some 18650 have protection built in and some don't and you definitely need protection circuits.KanoMaster22 wrote: ↑Fri Jan 19, 2018 1:22 pmThanks for the replies. The 18650 batteries look like good value and capacity. Also, the lipo batteries are good value and capacity as well. However, I heard connecting lipo batteries in parallel is dangerous. I will probably opt for the 18650 batteries as they can easily be bought and need less protection.
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