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NLR - Battery Life Savers BLS-12/24B Battery Desulphator Rejuvenator


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What is the BLS?

An electronic device that brings old “dead” batteries back to life, restores functioning batteries to a like new condition, and keeps batteries from losing capacity and life due to the build-up of lead sulfate. Simply connect the BLS directly to the battery system and use the system as normal.


12 or 24 volt batteries or battery systems. This is the best model to rejuvenate old batteries. For shop use.


Weight: 1 pound (.45 kg)
Dimensions: 4 x 2 x 2.5 inches (10.2 x 5 x 6.35 cm)
Current Draw: 250mA
Current Draw: 250mA @ 24 volts, 125mA @ 12 volts
Connection Type: Battery Clamps
Wire Length: 3 ft, spans 6 ft.

  • Easy to use, attach it & forget it 
  • Reverse Polarity protected
  • Sturdy & built to last, weather resistant
  • Easy, do-it-yourself installation
  • Only one BLS needed per battery system
  • Double, in some cases triple battery life
  • Rejuvenate old batteries
  • Protect the environment for harmful battery waste
  • Environmentally Friendly

The BLS uses patented Wave² Technology to handle the problem of sulfate build-up in lead acid batteries. It sends a signal that matches the frequency of the sulfate crystals, causing them to dissolve into lead and sulfuric acid. This restores the battery to a like new condition and/or extends the life of the battery.

Using the BLS

Connect the BLS directly to the batteries, in parallel with the charging source, the red wire to the main positive battery terminal and the black/red wire to the main negative battery terminal. Then use the battery system as normal.

5 Year Limited Warranty

This product is shipped from one of our warehouses in Northern California. Orders placed after 12 p.m. will typically ship the following business day. To see an estimate of our delivery times, click here.

Returns & Replacements
Products can be returned for a refund within 30 days of receipt if unused and in original packaging. Returns are paid for by customer unless product is defective or damaged, in which case Real Goods assumes responsibility. Please use Fedex, UPS, or USPS with tracking, for returns.

Returns of solar panels, inverters or other large ticket items will incur a re-stocking fee of up to 20%. Freight shipping is non-refundable.

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