Third party batteries

Started Apr 2, 2014 | Discussions thread
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Sal Baker
Veteran MemberPosts: 8,632Gear list
Re: Why take the risk to buy non-brands?
In reply to wyldberi, Apr 5, 2014

wyldberi wrote:

Sal Baker wrote:

Again, these are very unsophisticated batteries with no special electronics or chips. They are more like AA batteries than DSLR batteries. Pay more if you like, but they all have the same chance of blowing up, which as of now is zero.


I agree with your opinion of non-OEM batteries; I use Wasabi batteries in all my cameras.

But I was under the impression that the majority, if not all, lithium batteries being made now include a bit of electronic circuitry to prevent them from overheating if they are not removed from a charger after being fully recharged.

Your statement that no such electronic component exists comes as a surprise to me. Then again, my previous belief was based on a more general understanding of how lithium ion batteries are built, not how camera batteries or Fuji camera batteries are constructed.

Can you direct me to a source that confirms your assertion?


I was only talking about electronic components that communicate usage data directly to the camera. Lithium charging is complicated and tricky, and it's not controlled in the battery. Many manufacturers, like National Semiconductor, make chips that operate in pre-qualification mode, constant-current mode, constant-voltage mode, top-off mode, maintenance mode, and measure and control thermals.  These chips make it easy for Fuji, Wasabi, Watson, etc. to make customized chargers without all the R&D.

The charging programming that protects for overcharging all happens in the charger circuitry, not in the battery.  The batteries are just simple power cells.

There's an abundance of resources available, just Google.


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