the ones I find problematic are the version with the round molded plastic ends, the pins are too thin and wont stay in the "real" Dupont wires ( squar...

what I like to do with the 4 slot holders is use the 2 outside slots to hold the batteries and the 2 inside slots to hold a 3.3/5vdc regulator, that w...

how extensive is the set up as far as series paralell modules?... if you need some quick and dirty battery holders, Amazon has several variations 1,2...

I also have been trying to find/build a low volt hi current supply for laser diodes and hi power leds. Ive tried a couple of motor controller that wer...

if the battery holders have height restrictions, you may have an issue with the protected 18650s fitting them. I had an application that used 3 18650s...

yupperz... Ive mangled several double and triple battery holders to become a single cell unit. 😀

I took a look at the Ebay info, they dont offer the info required. What you want to look for is amperage drawn or watts used when operating. and... n...

looks like your ballast resistor for the IR transmitter is too high, try dropping it down to 100 ohms. what kind of voltage supply are you using? and,...

@codecage hmmm, not good to see that even vape shops are being that way. As far as the battery being longer due to the "circuit board", its a battery ...

battery costs from vape shops are a bit higher than elsewhere. but then again you will be getting a set of batteries that were made for hi amp usage. ...

flat tops have the wide contact surface, pretty much as wide as the whole top of the battery within the insulated area, button tops have a protrudance...

I believe the chips are power balancing units to keep the current "equal" between cells when charging is taking place.

looking for decent to hi quality 18650s?? find a Vape Shop, seriously, a Vape shop sells top quality batteries. Ive got some 18650s ( Sonys) that hav...