I'm building my first robotic car (Elegoo Smartbot Car Kit) but I'm struggling with which batteries to buy. The kit itself doesn't seem to say too much other than they're 18650 LiPo batteries which I've now learned 18650 refers to the dimensions of the battery and LiPo is Lithium Polymer.
I watched an assembly video and managed to pause right on the spot where the guy shows the batteries: ICR 18650 10/17 2200mAh 3.7V and the last part is difficult to read but it looks like 8.14Wh.
I've looked online in South Africa and can't find an exact match for these batteries.
I don't know much about batteries/electrics so I'm not sure what alternatives I can use and when I'll be looking at damaging the electronics.
I seem to be able to get anywhere from 2000mAh to 4200mAh all 18650 and 3.7V. Some of these are Li-Po and some are Li-On. Some research lead me to believe that Li-Po and Li-On are compatible, the difference being that Li-On is perhaps better?
My understanding is that mAh (milliamp hours) refers to the ability of the battery to hold a charge... Not exactly sure what that means though.
- Is it safe to buy an 18650 battery with a higher mAh rating? I.e. it won't damage the car?
- Is my understanding about Li-On and Li-Po correct?