Just a bit of advice please 🙂
I just bought some Niterider MiNewt X2 lights from the classifieds. These are going to be used for mostly road cycling, with an occasional foray onto easy trails. I liked the idea of these because of their light weight and easy mounting.
Anyway they run on a Li-Ion battery, and the run time is about 3.30hrs on low and 1.45hrs on high. I'd like to carry a spare battery - and I've seen that On-One sell a Li-Ion battery for their Luu lights for only £29, but a replacement from NiteRider is triple that.......
........for a backup battery, would it be possible (with some tinkering with a spare cable) to use a different brand of Li-Ion battery? I am pretty handy with a soldering iron and electronics, so making up a cable to use should be pretty easy. Cheers 😉
My Minewt x2 dual (dont know if you've got that exact one?) has a 12v battery and charger. The shape indicates there may be 3 18650 cells in there (wired in series I guess) along with a switch and driver. There are however 3 connections on the socket and plug. I dont know what the extra one is for - either to communicate with the charger or to drive the indicator leds on the lights.
If you buy third party or make you own you would loose some of the functionality - it would probably only run on max mode all the time, there may / would be no regulation, the indicator leds wouldnt work and you may not get any low voltage cut off (unless the new cells are protected).
If none of that bothers you and you can get hold of a connector (I believe they're Niteriders own) then it might be worth a shot.
£50 gets you my niterider light unit, battery, and charger. Or £30 for the battery and charger.
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Hmm, which model have you got?
minewt x2