Sounds like its dropped below the minimum voltage, check you can't change that setting on your charger. there are a couple of things you can do, both are dodgy and Ive never done , so Im not going to advise you at the risk of being shot down on here
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Dave
www.norfolkbuggyclub.moonfruit.com
kyosho optima,Bosscat,Boomerang,,RB5 Vega,RB7,,RC12 5.2, TLR22-4,MP9,HB807T
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