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#291524 - 01/01/19 08:57 PM Re: Power Banks? [Re: hikermor]
Ren Offline

Registered: 11/05/07
Posts: 154
Currently considering a flashlight that can act as powerbank. Just something to carry in the day bag/pack, and keep the phone topped off, together with some spare batteries.

One is MecArmy MOT10, uses 18650s has micro usb for charging, and full usb for charging other devices.

Another few options from Rofis, the mr30, mr50 or mr70

The first two use 21700 lion effectively making the flashlight a 5000mAh powerbank.

#291525 - 01/02/19 04:48 AM Re: Power Banks? [Re: hikermor]
GoatRider Offline
Old Hand

Registered: 08/28/04
Posts: 832
Loc: Maple Grove, MN
One thing that is true of all lithium batteries is that if you're going to store them for awhile without using them, they have the best shelf life around 60% full. Not as useful for unexpected use that way, however.
Santa brought me the Sherpa 100ac- it's everything I expected, except for one thing- there's no 12V output, so I can't use my 12V ni-cad charger with it. But I've never actually used that option while camping, I have enough AA's and AAA's pre-charged that it's not an issue.
- Benton

#291854 - 03/03/19 09:12 PM Re: Power Banks? [Re: GoatRider]
Russ Offline

Registered: 06/02/06
Posts: 5129
I have the GZ Yeti 400, an excellent power source for small stuff. It does have a 12Volt output port, but I plugged that with a USB adaptor so the unit now has four USB power ports. I also have two Anker Powercore power banks (my aforementioned 20KmAh & I recently purchased a 10KmAH unit for increased portability). The two Anker power banks are very portable and can keep my flip-phone and GPS receiver running for a long time.

As for Li-ion battery life ó Iíve had a Nitecore UM10 charger for a while now. It is small, only does one Li-ion battery at a time and it charges exclusively from a USB port (or AC adaptor). The UM10 also has an USB output port under itís cover (the bottom hinges open to access the port). The nice thing about the UM10 if you have a number of 18650 batteries, is that rather than a couple bars to allow you to sorta kinda guess the charge level, it has a percentage read-out so that when you get to 60% (or in my case 65%) I can stop charging and put the battery in storage; or I can run it up to 90% and drop it in one of my flashlights. As I understand, that last 10% charge causes heat to build up and that reduces battery life.

FWIW, $.02

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