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I bought a 2019 Tw200 and the battery was dead. I bought a new AGP battery from my local motorcycle dealer. I took a cheap model (Chinese copy of a YUASA YTZ7SS) but after charging it completely it only had 12.5v. I tried with 2 different chargers and same result. I took it back to the store and they tested it and it was 75% charged and it was 60% healthy.
They advised me to take a real YUASA YTZ7SS at $220, which I did to have no more problems. when fully charged it only had 12.6 volts (tested with 3 different multimeters) and I tried charging with 2 different smart chargers. I even bought a Battery Tender Jr to be sure and still the same, the charger stops and says the battery is full but it's only 12.6V. I therefore went to the store again and he put the battery to charge on his charger overnight. The next day when I went back there he tested and it was the same, just 12.6V and his tester was giving like 80% charge but the battery health was at 105%. He said it must be faulty so he exchanged me for a similar one.
Arrived at home I charged this third battery immediately and after a full charge I tested it at 12.9V, finally ! But a few hours later I retested and it was back to 12.7V. Is it normal or not? I really don't know what to think anymore. What do you think ?
They advised me to take a real YUASA YTZ7SS at $220, which I did to have no more problems. when fully charged it only had 12.6 volts (tested with 3 different multimeters) and I tried charging with 2 different smart chargers. I even bought a Battery Tender Jr to be sure and still the same, the charger stops and says the battery is full but it's only 12.6V. I therefore went to the store again and he put the battery to charge on his charger overnight. The next day when I went back there he tested and it was the same, just 12.6V and his tester was giving like 80% charge but the battery health was at 105%. He said it must be faulty so he exchanged me for a similar one.
Arrived at home I charged this third battery immediately and after a full charge I tested it at 12.9V, finally ! But a few hours later I retested and it was back to 12.7V. Is it normal or not? I really don't know what to think anymore. What do you think ?
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