I dislike using the Y cable to connect my tail light to the same battery as my headlight. I was wondering if I could use the 2 cell battery (8.4v or 7.4v I'm not sure) to the tail light (3v) by itself and stash the battery under the seat?
I know these batteries are all different because when I switched by Magicshine battery with an Amazon clone one night it just shut off within a half hour of using it.
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