Engenius 3.7 V Rechargeable Li Ion Battery 1700Mah

Eartec Rechargeable 3.7V Lithium-Ion Battery for UltraLITE & HUB Systems

Nitecore 18650 Li-Ion Rechargeable Battery is a great source of stored energy. Being rechargeable makes this battery cost effective. This Nitecore Li-Ion battery has demonstrated its dependability in a flashlight over a period of seven hours of intermittent use. Great product!

I've this flashlight for almost 4 years now and use it on the job pretty much every day. The 3.7 volt Li-Ion rechargeable battery is just starting to go but still works. It so convenient just to plug into a usb a charger.

li-ion is the way to go.

Very durable light. Great pocket clip. Using rechargeable Li-Ion 14500 for the extra lumens.

Have been awaiting a flash that utilized Li-Ion rechargeable batteries.� Shot a 3 hr event this weekend and still had 1/2 battery available.� Love this product!

I have the larger version of this battery tester but also wanted to be able to test NIMH and Li-Ion 9v batteries. I am very happy with both testers and feel like these are the best on the market. Highly recommended!

I purchased Godox VB-18 Li-Ion battery as a backup for my Godox VING V860IIN Flash for Nikon DSLR. This was the first time I was going to use my Godox VING at an event. I felt the need for a backup battery, not knowing how many shots I will be able to take on a single charged Li-Ion battery? It turned out that I finished whole event with the need of backup battery, I took almost 1500+ pictures with Nikon D750 at that event and the battery indicator on the flash was still at little less than half way. This battery is like an energizer bunny, it kept going on and on, no indication of dying. The flash recharge times was very fast and the exposure and white balance with Nikon D750 was spot on most of the times. This is like dream flash for event shooters, I highly recommend Godox V680II flash unit and battery. As always B&H was very fast at shipping.

This battery is an updated version of the 5400mAh. All of the previous versions of Li-ion lasted (my are over 10 years old,) but you never knew how much power was left. This version has LED to let you know. Nice.

The Profoto Li-Ion Battery for the A1 Flash works beautifully. The biggest advantage for me is that it's one battery, rather than 4 separate smaller batteries. Charge it, attach it to the flash, and it's ready to go.