SCTrooper[TK] Posted October 20, 2014 Report Share Posted October 20, 2014 (edited) I have been using disposable batteries and decided to find something that I could charge on the go with usb connection. This power bank has 2400mah and 5v output. Works perfect for helmet fans. Anyone else using these. ====== Edited March 30, 2022 by gmrhodes13 link removed no longer working Quote Link to comment Share on other sites More sharing options...
gmrhodes13[Staff] Posted October 20, 2014 Report Share Posted October 20, 2014 Been using some AA 3.7v 2400ma batteries, twice the power of a normal AA battery and still fits in battery holders, also great for upgraded E-11's needing higher than 3 volts. Quote Link to comment Share on other sites More sharing options...
toybiz[TK] Posted October 20, 2014 Report Share Posted October 20, 2014 I have used the same spec back up battery to power my dual helmet fans for several troops and they powered up fine. The longest was for 4 hours and still running. I couldn't tell you for certain how long 2,300 MAh will last but if you are not taking a break after four hours...we have other things to worry about. http://www.whitearmor.net/forum/topic/26919-my-first-esb-tk-build-mtk/?p=348185 Adam Quote Link to comment Share on other sites More sharing options...
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