Duracell Ion Speed 4000 Rechargeable Battery Kit

Rechargeable lithium-ion battery used for Olympus camera works well everytime.

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!

The Nikon EN-EL 18d Rechargeable Lithium-Ion Battery is a super battery with an incredibly long life and easy to recharge. Highly recommend!

I use this battery as a back-up to my Nikon battery EN-EL4a rechargeable Lithium-ion Battery Pack. I always use my original Nikon battery but if I am out in the field and my Nikon battery goes down after many shots, I then switch to the the Watson EN-EL4A Lithium-Ion Battery Pack as my back-up until I can re-charge the Nikon battery again at home. I find it's more economical using it that way since there is such a big price difference between the Nikon Battery and the Watson Battery. However the Watson battery is a very good battery and reliable in every way.

Great battery that last for years. A few years ago (2008 to be more exact) I decided to try rechargeable batteries again, now that batteries started to switch to longer lasting battery technology. I started with energizer and it failed badly so I waited about 2 more years before I tried Duracell. I had gotten a wireless headset and was going through about 2 AA batteries a day. I tried Duracell rechargeable batteries and it worked like it was supposed to. I now use Duracell in all of my battery powered devices and have no complaints.

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

The Sony NP-FZ100 Rechargeable Lithium-Ion Battery (2280mAh) delivers as promised as an OEM battery.

The Sony NP-FZ100 Rechargeable Lithium-Ion Battery (2280mAh) is reliable, just as you would expect from an OEM product.

Purchased the DMW-BLC12 Rechargeable Lithium-ion Battery (7.2V, 1200mAh) as a backup for my Leica Q. Works flawlessly and entirely likely that the two are identical except for the branding printed on item (the two companies have a close relationship with one another). Lasts equally as long as its Leica-branded counterpart, fits perfectly in the Leica charging unit and seems to have no downsides. And for the price compared to Leica's own model, it's a no-brainer.

I bought an extra DMW-BLF19 Rechargeable Lithium-ion Battery Pack (7.2V, 1860mAh) by Panasonic for my GH4 and so far it has been perfect. I always buy OEM batteries for my gear because I don't trust the cheaper off brand stuff. This battery can battery can power a GH4 for most of the day. Either this is an amazing battery for the GH4 is incredibly efficient. Either way, this battery is worth the extra money and is reliable, lightweight and affordable. I cannot recommend it enough.