HKB Electronics 7.5A MK3 AGM Fused Mini Blade Battery Voltage Boost Regulator with PTC
4.5 (1,234)
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$59.99
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Black
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Adding a voltage booster is a necessary upgrade for anyone running an AGM battery in their vehicle. Cruiser Patch recommends using this fused diode to increase alternator voltage output at idle and under load from 13.2V-14.2V to 14.4-14.6V. ...
Reviews
5.0
4 ratings
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Worked as advertised - thanks!
Who would have thought that a simple fuze replacement would make such a difference? Went from 13.4V to 14.4V - guessing my dual AGM batteries are loving it. If you get the battery light, flip the fuze per directions.
2
2006 · May 6, 2026
A must for AGM batteries
This thing is magic when my cruiser is on it charges at 14.7 amps some times more, keeps the battery at a solid 13.5 amps when off.
n
noah · May 6, 2026
Battery Voltage Booster
Works like it should, went from 13.6 to 14.3 at idle, other benefits not tested at this time..