A better way to charge security light batteries?

[wolfrc]

Maybe I'm missing something, but is there a way to charge these batteries without having to take down a camera and plugging it in? This is a real pain.

[michaelkenward]

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@wolfrc wrote:
...is there a way to charge these batteries without having to take down a camera and plugging it in?

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Only a spare battery or "mains" power. Maybe also a solar charger.