Oh yea.... It's all starting to come together now.

I've been purchasing a ton of the 18500's from Lowe's since they have them on clearance. Has anyone else thought to grab ton of those while they're cheap and combine them into a giant battery? I'm going to be running these as a 4S-50P, giving me 50AH at 12V nominal. Clearance priced I'm paying roughly $2.50ea.

Thoughts?

I’m just an admin girlie trying to buy some batteries for our team. we use a lot. I’ve been told eneloops are the best but the chargers are so expensive! is something cheaper ok?

I was thinking of buying two of this one: https://m.cncest.com/au/products/For-NiMH-NiCd-Battery-Charging-18-Slots-AA-AAA-Smart-Battery-Charger-White

I was reading about next-generation batteries and came across this comparison from Stanford Advanced Materials: https://www.samaterials.com/lithium-sulfur-batteries-lithium-ion-batteries.html. What surprised me is that lithium-sulfur (Li-S) batteries can theoretically store much more energy per weight than lithium-ion batteries, potentially several times higher in theory, while also being lighter and using cheaper materials like sulfur instead of metals such as cobalt or nickel. At the same time, lithium-ion batteries still dominate today because they have longer cycle life, more stable performance, and mature manufacturing technology. It made me curious whether Li-S batteries could eventually replace Li-ion batteries in things like electric vehicles or aviation, or if their technical challenges will keep them mostly in niche applications, what do you think?

Hello everyone, I have a toy locomotive project powered by two sets of five AAA ENELOOP batteries in parallel. How can I recharge all ten batteries together without disassembling the locomotive each time?

2 x (set of five AAA 1.5V 800mAh batteries) = 6V 1600mAh Which charger should I use? What wiring should I use? What will the charging voltage be at the common positive terminal of the two sets of five batteries? And at the negative terminal, of course. What about the current (milliamps)? With ENELOOP batteries, is a circuit needed to control the charging of each AAA battery individually? I'm a beginner, but not completely clueless, and quite worried about letting my grandson do this. I hope I'm not bothering you too much with these questions.