USB rechargeable battery in stand alone charger?

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Ledhead
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USB rechargeable battery in stand alone charger?

Hi All,
I’m struggling to find the answer. Can / should a USB rechargeable battery be charged in a stand alone charger? I suspect not but….
Thanks.

elbakan1
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Y not. They have a + and a -. Like any other battery right?.
A good external charger is always better than the built in. IMAO.
Wait for some more replies just in case. Even if I do it all the time.
Cheers.

Lighting up the world one flashlight at a time.

Serlite
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I’ve never heard of any problems doing this, though the only ones I’ve personally used with an external charger are the Wowtac batteries.

I agree that given the option, using a quality external charger is better since it allows you to set charging rate, monitor progress, and also catch anomalous behaviours (like high internal resistance that results in a lot of energy being converted to waste heat). There’s a possibility that there’s some proprietary battery out there that wouldn’t work with an external charger…but to me that’d be a shortsighted design decision.

Ledhead
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Thanks. I’ll give it a try…

Sirstinky
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I could charge an Acebeam protected (with usb charging) in my charger just fine, but an Olight proprietary 18500 wouldn’t.

flydiver
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Don’t know if it pertains to ALL USB batteries, but it is likely to work.
I’ve tried a couple Li-on that did work, a Li-on/1.5v AA that did, and one that did not. The AA have voltage conversion and charge protection which adds complications.
Straight up 3.7v Li-on should not have that issue.

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Perception
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All the USB rechargeable batteries I’ve seen would probably be fine. The ones I would be really careful with are the proprietary batteries that have both terminals on one end of the battery.