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Archive for July, 2013
Posted by punkindrublik | Jul 30, 2013 @ 04:24 PM | 38,109 Views
So I don't like taking the cover off to charge my HK 1500mah LiFe packs. I came up with this mod to make charging the battery within the transmitter, so no more battery removal.

PLEASE DO NOT ATTEMPT THIS IF YOU ARE NOT COMPLETELY COMFORTABLE WITH A SOLDERING IRON. You will be working on sensitive electronics and could possibly damage or destroy your transmitter and/or void any warranty.

PROCEED AT YOUR OWN RISK.

That being said, the first thing you need to do is purchase one of these -
http://www.ebay.com/itm/320715057097

It say's 9.6 volt in the ad, but I was informed that this is the correct charger for a 3-cell LiFePO4 pack. I tested this unit with a charge on my pack and it successfully charged to 10.9v and then shut off. Success. I was a little concerned that the label on the back said Li-Ion, but I was again assured by the seller that the labeling hasn't been updated. Anyway, the voltages check out, so I'm happy. It charges at a 1a rate, so you're looking at 1.5 hour charge from a maximum discharge. The unit has an led that is green when fully charged or disconnected. And it shows a red led when charging.

All we're doing here is bypassing the internal charger.

The pics have descriptions. If you got past my disclaimer/warning then the pictures should show an easy modification. Feel free to post questions if something isn't clear.

CHECK, RECHECK and then CHECK AGAIN FOR CORRECT POLARITY.
And AT NO TIME CONNECT THE BATTERY DURING THIS PROCESS!!!

Good luck and...Continue Reading