Portable Powerbank

idleprocess

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Feb 29, 2004
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And here come the graphene chargers:

Details are a tad sparse on said brand's website. But if we assume their 5Ah bank has nominal Li-Ion voltage of 3.6 then that's 18Wh, charged 0-100% in 18 minutes is a neat 0.3 hours meaning it nets 60W of draw from the power supply.
 

Hooked on Fenix

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Dec 13, 2007
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2,164
Just got the Nitecore 21700 Intelligent Battery System. It's a compact kit with a magnetic power bank and battery charger, high cri 80 lumen magnetic lantern, and 21700 I series battery. It's hard to beat the compact size of the 2 amp power bank and you can't beat how fast it is to swap out the 5 amp battery. Despite both contacts on one end of the battery, they made it backwards compatible with other lights by having a regular negative terminal on the other end. The 15 amp rated battery works with my E4K and MH10 v2 which are not I series lights. The lantern has no moving parts to wear out (no switch) as it turns on when connected with the battery. For $6 more than a 15 amp rated 5 amp battery with a built in USB port, seems well worth it to get a power bank and lantern as well as a backup battery for a light like the E4K.
 

Poppy

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Dec 20, 2012
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6,013
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Northern New Jersey
About September 2020 I bought a LiIon 8000 mAh car battery jump starter, at Costco. It is the Type S brand. It worked fine on my 9 HP lawn mower, but I couldn't test it on my 4.6L 8 cylinder engine (its battery was fine).

After not being used for a month or more, the battery in my car became stone cold dead. I tested this LiIon battery and it cranked the engine as quickly as the new replacement battery did. Despite, not topping the LiIon cell off since I got it, it was still at 100% charge, and after cranking and starting the car's engine, it was still at 95%.

I am pleased to give it a passing grade.

It comes in a convenient zip up container, has a flashlight, and can be used as a power bank.

ACtC-3dZ5jjnoGBtZ7bFcFvNrbiGSvVy7gnKUPqx-ZQXqMtorVbCGJjfNltMtAYE_PaBWjGolJemN7PkZL-NGI8bGjR8jg2bXvka-SAsLr6VxzEsdC_-vC17xFcRvnzlxerk7kDnuJ51nLV9pLW6x1KW-XCd=w617-h789-no
 

ZXD

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Aug 20, 2018
Messages
6
That is interesting. I have had good luck with Anker power banks over the years but I have been wanting to get something water resistant/proof and tougher so I don't have to ziplock them when hiking.
 

Lynx_Arc

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Oct 1, 2004
Messages
10,754
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Tulsa,OK
I like Anker power banks too but I think water proofing them would not necessarily be a good thing as in charging them pressure could build up and have nowhere to vent plus having rubber caps over all the ports is a mess as often there are 3 ports on larger power banks. What would be nice is custom fitted ziplock type bags that are thicker than food bags.
 
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