Comparing Eneloop and Li-Ion Rechargeable Battery Types

Two recent developments in rechargeable battery technology have changed the consumer's ability to power their electronics. Eneloop batteries, also known as NiMH batteries, take longer to loose their charge than most batteries and are very versatile. Li-Ion (lithium ion) batteries pack a bigger punch than most batteries their size and also take much longer to lose their charge than regular lithium batteries. However, Li-Ion batteries do not come in standardized sizes. The difference in chemical types changes the abilities of these rechargeable batteries.

Eneloop vs. Li-Ion Batteries

Eneloop batteries (which is the SANYO brand name for NiMH batteries) are rechargeable, as are Li-Ion batteries. However, these batteries are not interchangeable. Eneloop batteries come in standardized sizes: AAA, AA, etc. Li-Ion batteries do not come in standardized sizes, as the manufacturers are concerned that consumers might put these super-charged batteries into electronics that cannot handle that amount of power. The only overlap between the two batteries is with cellphones. For many cellphone models, both batteries are acceptable power packs.

Other Considerations

When purchasing rechargeable batteries, such as the Eneloop or Li-Ion batteries, a power pack is required. This additional cost, which varies by brand, is something to consider. Additionally, due to the newness of this technology (especially for Li-Ion batteries) it is much more expensive to purchase these super-powered batteries, compared to alkaline batteries.