How long does it take to fully charge a battery?

Got a charger here that says 230V- 50Hz 2.2W
2x (2.8V---55mA)
0.31VA
Any idea how long it’ll take to charge these 2400 mAh and 800 mAh batteries? I can't tell from the box and honestly, I'd rather not have my house blow up while I'm standing right next to it. 🤷

If those batteries are already running pretty low, just leave them on the charger for at least 12 hours during the day—and keep an eye on them while they're at it, just to be safe.

I’m doing the same thing—charging them all day long and cycling through different power levels depending on what I need.

If you actually want to know the exact percentage remaining in those cells, your best bet is to head down to a decent local camera shop and ask them to run a check for you.

That’s honestly what I ended up doing. My digital camera kept insisting the battery was dead even though I’d had it plugged in all day. Turns out, when I got them checked, they were only sitting at about 60%—not nearly enough juice to actually snap a photo.😢