Searching through the various dive lights in the market, some use Li-ion batteries, such as 18650, 26650, and a part of them use AA /AAA Ni-MH batteries. From different users’ choice, there appears to be different opinions in regards to what the best battery is on a dive light.
As we know, Li-ion battery has good power, low self-discharge, no memory effect, and can be stored for years, wildly used in dive lights now. As for Ni-MH battery, it has a good capacity, favorable price but relatively high self-discharge, with memory effect. Many divers agree Li-ion batteries have better performance on their dive lights. While, some prefer dive lights powered by Ni-MH batteries. They say the specific energy capacity is greater with several 18650, 26650, but the whole dive light is also heavier, bigger, which might negatively affect diving. If they want 2 hours runtime, lighter NiMH also has more than enough power capacity for that.
What do you guys power your dive lights on?
As we know, Li-ion battery has good power, low self-discharge, no memory effect, and can be stored for years, wildly used in dive lights now. As for Ni-MH battery, it has a good capacity, favorable price but relatively high self-discharge, with memory effect. Many divers agree Li-ion batteries have better performance on their dive lights. While, some prefer dive lights powered by Ni-MH batteries. They say the specific energy capacity is greater with several 18650, 26650, but the whole dive light is also heavier, bigger, which might negatively affect diving. If they want 2 hours runtime, lighter NiMH also has more than enough power capacity for that.
What do you guys power your dive lights on?