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BatteryMINDer® Model 48021: 48 Volt 2 Amp (48V 2A) Battery Maintainer/Desulfator

DISCONTINUED. Replaced by Model 483CEC1.

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BatteryMINDer® 48021 maintainer/desulfator extend the run-time, range and performance of new and older batteries considerably longer that standard chargers, ensuring that your batteries stay fully charged and free of sulphate for months at a time, whether operational or unattended. Designed for all 48 volt systems, including electric golf cars, people movers, fork and scissor lifts, floor scrubbers and other battery electric industrial equipment. Can be expected to increase battery life and performance by up to 200% when used as directed on new batteries. Older batteries will also see significant life and performance improvement depending on age /condition.

Product Description

Features & Benefits: 

  • Provides safe long term maintenance charge to 48 volt systems, without overcharging.
  • Picks up where your equipment manufacturer’s supplied bulk charger leaves off for lasting maintenance and desulfation.
  • Uses less than 23 cents of electricity per month.
  • Eco-Friendly; qualifies for Energy Star and California’s Appliance Efficiency Standards for Battery Chargers.
  • Eliminates water-loss due to overcharge (always check fluid levels monthly for any loss due to normal evaporation caused by high temperatures ›95º F.
  • Isolates batteries from potential damage caused by power surge – lightning strike.
  • Detects weak batteries and automatically starts the reconditioning – desulfation process.
  • Ambient temperature sensing adds years to battery life and performance by eliminating over / under charge, regardless of temperature (0ºF to +130ºF.)
  • Shuts down (off) if power fails.
  • Auto restart if power fails.
  • Simple two-wire easy connect to batteries.  Quick connector supplied.
  • East mounting on equipment or stand alone.
  • Safe to leave on when unattended for long, extended time periods.
  • Automatic full-time pulse type desulfation.
  • IMPORTANT INFORMATION ON USING PRODUCT OUTDOORS: Weather-tight enclosure.  Always mount units in vertical position with cord sets exiting downward to ensure weather tight integrity. Unit must be mounted this way to ensure long term trouble-free life including weatherproof integrity. Mounting in any other manner or using unmounted (parallel to ground) except indoors may cause unit to fail due to water intrusion that is unable to drain correctly to avoid damage.

Included Accessories:

1 Year 100% Money Back Guarantee, 5 Year Parts and Labor "No Hassle" Warranty



Battery Voltage:
Charging Current:
Power Source:
90-140 VAC, 47-63 Hz
Works with:
Deep cycle wet (filler cap) and sealed batteries wired in series for 48 volt systems
Temperature Compensation:
Yes: -20°C (-4°F) to 40°C (104°F)
Multiple Batteries (#):
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