Friday, November 18, 2011

Battery Recharge Failure

Battery did not blow up. Charged it once, put it on the cm400 but no go. Took it down to O'Reilly auto parts and had them charge. Still no go. Topped off the battery with distilled water and charged for a 3rd time. Charge got up to about 13.45 volts across the battery.  While observing the voltage across the battery I noticed that it appeared to go down over time..Not much, but a few 100ths of a volt. Disconnected the battery from the charger and started doing timed readings. The battery looses potential at a rate of approximately .01V / 15 seconds or .04V/minute. Yikes: 2.4V/hour. I don't know if the drop off is because i'm currently over the 12V rating, or from an internal short. To test this i'm going to do a few readings over a couple of minutes and see if the voltage loss starts to drop and if so at what rate.

Update: battery over 16 minutes started to stabilize at 12.58 volts or there about. Drop off in potential was linear until very near this voltage and then started to hold steady.

Put it on bike and still no good.

In the meantime I purchased a new battery at a local shop... That battery is reading a solid 12.68V w/ the bike off. No reduction in potential w/ time.

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