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it is sending 16 pulses and after some seconds start pulsing again. when looking at the pulses in an oscilloscope it shows a ringing at several khz but the level seems small (10-20 ) . The connectors are not very good, the cable in black side is long. I am going to exchange the connectors to ring cable-shoos for better connections, i am also going to shorten the black cable to about 10 cm, The expected result is supposed to increase the level of the pulses.
Verified purchase: Yes | Condition: New
Tried using on 12v 12ah and also 26ah & 34ah batteries leaving on for over a week, made no difference at all to any of them. The pulse is not strong enough to clear sulphur off the plates. Great gimmick but completely useless. My results from testing the batteries were done on calibrated equipment by myself a fully qualified electrician so buy at your own risk.
Verified purchase: Yes | Condition: New
Didn't help with old battery. Might be ok to keep new batteries free of sulphation, but not to revive old batteries.
Verified purchase: Yes | Condition: New
Seems to be well made and works fine.
Verified purchase: Yes | Condition: New
Does not work, not powerful enough to do anything significant. A complete waste of money.
Verified purchase: Yes | Condition: New