Average Reviews:
(More customer reviews)The meter accuracy on the SC-800A was within 0.05 volts, and the charging algorithms appear to work well, although they are not described in the instructions.
I observed that the voltage was generally limited to 15.5 for regular, 16.0 for deep cycle, and 14.7 for AGM batteries.The 30 amp capability is in the form of a long timed pulse of about 2 minutes followed by 12 amps for a similar time period, then repeating until the voltage has risen enough that it isn't required.The amperage isn't constant, it tapers down to limit the voltage in typical CC/CV fashion, although the algorithm appears to actually be more complex.For instance, on a particular AGM battery it went to 15.5 volts near the end of the charge (95%) with current at about 1.5 amps for about 30 minutes and then stopped (completed).I suspect that this was an automatic attempt to condition the battery.A DieHard 71227 charger (Schumacher makes the DieHard 71227 charger) did the same thing.After three discharge cycles, it stoped doing the "high-voltage treatment".Also, in AGM mode it went to 15.5 volts briefly during one of the 40 amp cycles.Although the instructions for DieHard Platinum and Odyssey batteries say to choose a charger with <14.8 volts, this charger was obviously designed with these batteries in mind.
Two small negative notes.If a battery has voltage close to zero, the safety features won't let it operate.Also, if the AC power cycles, it will come back on as a charger set for 2 amps in regular battery mode after 15minutes.I wouldn't recommend leaving an AGM battery connected in maintenance mode.It's odd that the charger doesn't store the last used settings in the microprocessor's eeprom, or just use battery power to keep the processor running.
Overall, it's a nice charger.I hope some of the tech info above helps.
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Product Description:
This speedcharge charger has computer control to enhance the charge rate and it also monitors the battery condition to insure that the battery is not overcharged.With this charger, your batteries will be fully charged quicker than with conventional chargers.This charger is designed for use with 6-volt and 12-volt, deep cycle, gel cell and absorbed glass mat batteries. It also features a black and gray polypropylene case with retractable handle and push button controls to select and display charge rates.
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