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32 votes

Should I carry extra batteries in the field or bring a solar charging unit for a 30 day trek in Nepal?

If having a solar charger, you should note the limitations of law of energy conservation. Sunshine at best produces 1000 watts / square meter. However, best single junction solar panels are around 20% ...
juhist's user avatar
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13 votes

Has anyone successfully restored or revived a completely discharged Profoto B2 Lithium Ion Battery?

Do NOT do this. Please read this post from Electrical Engineering SE regarding Li-Ion battery. Li-Ion have one failure mode. Fire. And it's not a normal, lighter fire, or even a stove fire. It is ...
Nelson's user avatar
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13 votes
Accepted

Is it okay to not use the spare battery?

I don't know that there is a "best course of action", but here's what I do... I have multiple batteries, and I numbered them. When battery #1 gets low, I put in battery #2 and charge #1. If they've ...
twalberg's user avatar
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11 votes

Should I carry extra batteries in the field or bring a solar charging unit for a 30 day trek in Nepal?

I trekked for 14 days in nepal. I also bought a solar charger and extra batteries. Buy the highest wattage solar charger you can find and bring like 4 extra batteries. You can get away with charging 2 ...
Brian Yeh's user avatar
  • 211
10 votes

Should I carry extra batteries in the field or bring a solar charging unit for a 30 day trek in Nepal?

If space is not a critical issue. You should probably bring a few extra batteries as well as a solar charging unit. That way, if you ever run out of battery in your camera while on the field, you can ...
Austin's user avatar
  • 101
9 votes
Accepted

Should I carry extra batteries in the field or bring a solar charging unit for a 30 day trek in Nepal?

(this answer assumes digital photography) Carry extra batteries in the field or bring a solar charging unit? Carry the batteries. juhists answer explains why a ...
gerrit's user avatar
  • 1,480
8 votes

Should I carry extra batteries in the field or bring a solar charging unit for a 30 day trek in Nepal?

Depends on the camera. If a DSLR, you can get around 1000 shots per charge. If a mirrorless or some other camera that eats batteries, then 500 shots per charge, perhaps less. I can get by with two ...
qrk's user avatar
  • 3,016
8 votes

Is it okay to not use the spare battery?

What you're doing now is fine. Li-ion does not need to be fully charged for storage. In fact, the best state to store them in is between 30-70% charge, but I'd probably only bother with that if ...
Nate S.'s user avatar
  • 218
6 votes

Should I carry extra batteries in the field or bring a solar charging unit for a 30 day trek in Nepal?

Using a broader concept of cameras, carrying film and a camera that can operate without batteries is also an option. Small rangefinder cameras with excellent fixed lenses are widely available in the ...
Bob Macaroni McStevens's user avatar
5 votes

Has anyone successfully restored or revived a completely discharged Profoto B2 Lithium Ion Battery?

Disclaimer: I cannot be held responsible for any damage, injury or risks associated with what I am about to describe. This is an account of my own experience. Please proceed at your own risk. I've ...
Sam's user avatar
  • 167
3 votes

Should I carry extra batteries in the field or bring a solar charging unit for a 30 day trek in Nepal?

My vote is for a solar panel. Assuming you're going during tourist season you'll have bright beautiful days with lots of sun. Sure it will take all day to charge your phone though. Additionally I ...
Fred's user avatar
  • 31
3 votes

Has anyone successfully restored or revived a completely discharged Profoto B2 Lithium Ion Battery?

I experienced two “dead” Profoto B2 batteries. Tried what was described here, but could not make it work. Disassembled both the working battery and the faulty one. Measures close to 0V on the faulty ...
user100030's user avatar
3 votes
Accepted

Why does my camera battery only charge to 75%?

I'm guessing your battery is just old. It's a lithium battery, and lithium batteries inherently lose capacity with age. The D7000 was released some six years ago, so 75% is actually not horrible. You'...
mattdm's user avatar
  • 143k
2 votes

Are there any DSLRs which can charge the battery via USB?

Ok, this isn't a DSLR exactly, but I guess the original poster is interested in interchangeable lens cameras (ILCs) and just used DSLR as a kind-of synonym for ILC, no matter whether they are DSLRs or ...
juhist's user avatar
  • 6,760
2 votes

Is it okay to not use the spare battery?

Is it really healthy to simply forget it inside a drawer and after days of not using it just charge it and go to a photoshoot with it? Yes. Lithium ion batteries in general are quite durable. They ...
juhist's user avatar
  • 6,760
2 votes
Accepted

Nikon Z6 USB charging

It will probably charge the battery, but likely at a slower rate than Nikon's EH-7P USB-C battery charger. According to a Nikon employee's response to the question titled "USB-C power specifications" ...
scottbb's user avatar
  • 32.8k
2 votes

Is it okay to not use the spare battery?

"Days" is not a problem for an intact li-Ion battery, neither should "months" be. What should not be allowed to happen is letting them self-discharge below a minimum safe voltage. Well designed ...
rackandboneman's user avatar
1 vote

Is it okay to not use the spare battery?

Is it really healthy to simply forget it inside a drawer and after days of not using it just charge it and go to a photoshoot with it? Days are not a problem. Back with my old 550D, I'd shoot around ...
Dynat's user avatar
  • 141
1 vote

Has anyone successfully restored or revived a completely discharged Profoto B2 Lithium Ion Battery?

Yes the B2 battery does discharge when connected to the B2 control unit, yes the price of the battery is a real killer, so your average user will try anything. Yes I got the same dead results as SAM ...
Laurie's user avatar
  • 21
1 vote
Accepted

Charging the batteries for Olympus EM10ii in a car / usb?

Your best bet is to use the cigarette lighter in your vehicle via a 12V to 120V inverter. Plug the inverter into the car's cigarette lighter, then plug the camera's battery charger into the 120V plug ...
Michael C's user avatar
  • 175k
1 vote

Charging the batteries for Olympus EM10ii in a car / usb?

Time to go third party. There are several, mostly similar, options for you. All you need is a 3rd party charger that can charge Olympus BLS-5 and/or BLS-50 batteries (see the related question, Does ...
scottbb's user avatar
  • 32.8k
1 vote

Is Olympus Tough TG-5 battery charger just a regular USB charger?

According to this YouTube video, Olympus TG-4: Does It Charge with USB? | FAQ Video (queued to 29 seconds), yes, it does charge with USB.
Jimmy Jon's user avatar
1 vote

Why does my camera battery only charge to 75%?

I think what you're seeing is likely an artifact of the battery pack having sat around for a long time without being charged, and may go away on its own by discharging and recharging the battery pack ...
dgatwood's user avatar
  • 2,255
1 vote

Can I charge a canon 1200d battery (LP-E10) with an LP-E8E charger?

It might, but the dangers involved with having a charger that doesn't fit the contacts on the battery you have would make me recommend you not try. Shorting across the contacts could be a fire hazard,...
inkista's user avatar
  • 52.2k
1 vote

Is it necessary to fully drain Ni-MH batteries before recharging them?

Is it really necessary to fully drain the Ni-MH batteries before recharging them? Depends on your charger. If you have a charger that detects the end of the charge from negative delta-V (a slight ...
juhist's user avatar
  • 6,760
1 vote

Solar charging systems for camera gear

A 7.4 volt lithium ion battery having 860 mAh (my Canon 2000D uses this kind of battery) has 6.36 watt hours of energy. Even after the various voltage conversion and charging losses, charging it won't ...
juhist's user avatar
  • 6,760

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