![]() Performance test while standing 10.3mohms, 15 bars, 70% capacity (approx) Standing Voltage 12.27Standing Temperature 71.0Battery Weight 25 pounds Battery temp has risen to 71degFPerformance test while charging 215.6mohms 0% capacityĬharging was halted about an hour later as the battery temperature had risen to 82degF and wasġ0-30-2013 5:45pmPULSE CONDITIONING STARTED Battery temp still holding at 69degFPerformance test while charging 272.6mohms 0% capacityġ2.88v to 12.89v (fluctuating) 5:00am charge rate has risen to 4A. Battery temperature is still 69degFġ3.40v to 13.41v (fluctuating) 4:20am 2A charge appliedPerformance test while charging 570.9mohms 0% capacityġ3.21v to 13.25v (fluctuating) 4:30am charge rate has risen to just under 4A. When pulse conditioning is started, I'll detach all equipment when performance testing.Ĥ:15am Switched to 2 amp charger as 1A charger is overheating and triggering the circuit breaker. At some point the voltage bottoms out and begins increasing.I suspect fluctuating performance test results are due to the fluctuating voltage. Note: Normal fluctuation voltage on a severely sulfated batteryAlso severely sulfated batteries will show a decreasing voltage as the plates begin to take a charge. Voltage measurements made with two Fluke 75 DVMsBattery temp measurements made with Raytek MT-6ġ3.45v (fluctuationg) 2:30am 1A trickle charge appliedġ3.60v to 13.75v (fluctuating) 2:40am 1A trickle charge appliedġ3.46v to 13.78v (fluctuating) 2:50am 1A trickle charge appliedġ3.62v to 13.74v (fluctuating) 3:00am 1A trickle charge appliedPerformance test while charging 1297mohms 0% capacityġ3.63v to 13.87v (fluctuating) 3:10am 1A trickle charge appliedPerformance test while charging 808.1mohms 0% capacityġ3.55v to 13.84v (fluctuating) 3:20am 1A trickle charge appliedPerformance test while charging 443.1mohms 0% capacityġ3.15v to 13.20v (fluctuating) 3:50am 1A trickle charge appliedPerformance test while charging 264.9mohms 0% capacityġ3.02v to 13.07v (fluctuating) 4:10am 1A trickle charge appliedPerformance test while charging 107.7mohms 0% capacity Spring 2012 I suspect previous owner used a standard chargerSpring 2012 Lawn Mower purchased and used to start engine with no problemĢ.426v Standing Voltage, battery temp 69degFīattery performance test could not be conducted due to low voltageBattery performance measured with Cen-Tech Digital Automotive Battery Analyzer Spring 2011 I suspect previous owner used a standard chargerIf overheated there will be some permanent damage May 2010 350cca Battery sticker - 25 pound weightExide GT-XHD (U1 Group) This posting will be updated when pre-conditioning charging and pulse conditioning is complete. In this way any voltage gains after peaking will be attributable to desulfation. The 1A charging is critical to avoid overheating the cells and incurring further permanent damage. Normally I will 1A trickle charge the battery until the voltage peaks before pulse conditioning. Ultimately performance data as measured in "Pounds of battery per day" is needed to evaluate pulser designs. I suspect many others will normally be pulse conditioning their seasonal equipment batteries in the spring or fall before retirement. Others may wish to compare/post their data as a 350CCA battery is common on tractor/mowers. The next battery will be from a car that has sat for over a year and will be a zero volt battery. The current battery is from a lawn tractor that has been unused since Spring 2012 (1.5 years). With the new design I am hoping to improve conditioning times on worst case batteries. Batteries that were in better shape would finish faster. The older design can condition a DEAD (zero volts) 30 pound starter battery in three days (10 pounds of battery per day). This is one of my older designs which has been made more powerful. I am working on a new pulser and will test it shortly.
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