1 Year Manufacturers Warranty Included
  • UB670 Universal Power Group Battery (Replacement)

    Pro-Series VRLA (PSV)

    UB670 Universal Power Group Battery (Replacement)

    Our PSV 670 is a 6 Volt 7Ah,  valve-regulated lead-acid (VRLA) battery.  It is constructed utilizing the newest AGM (absorbed glass mat) technology.  The entire Pro-Series VRLA (PSV) line of batteries is built to last in a wide array of...

    $10.55

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    $10.55

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  • UB645 (D5733) UPG Battery (Replacement)

    Juice Box

    UB645 (D5733) UPG Battery (Replacement)

    UB645 (D5733) UPG Battery (Replacement) Why does it say "Replacement"?  When The Battery Dude says "replacement" it means we have checked the specifications of that battery and found a direct replacement in our Juice Box brand battery. The UB645 is...

    $3.95

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    $3.95

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  • UB613 (D5731) Universal Power Group Battery (Replacement)

    Pro-Series VRLA (PSV)

    UB613 (D5731) Universal Power Group Battery (Replacement)

    Our PSV 613 is a 6 Volt 1.3Ah,  valve-regulated lead-acid (VRLA) battery.  It is constructed utilizing the newest AGM (absorbed glass mat) technology.  The entire Pro-Series VRLA (PSV) line of batteries is built to last in a wide array of...

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  • UB6120 (D5736) Universal Power Group Battery (Replacement)

    Pro-Series VRLA (PSV)

    UB6120 (D5736) Universal Power Group Battery (Replacement)

    Our PSV 6120 F1 is a 6 Volt 12Ah,  valve-regulated lead-acid (VRLA) battery.  It is constructed utilizing the newest AGM (absorbed glass mat) technology.  The entire Pro-Series VRLA (PSV) line of batteries is built to last in a wide array...

    $14.25

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    $14.25

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Battery Buying Guide

While choosing a battery check these info to correctly match your requirements

Voltage

Must Match

New battery voltage must be the same as your old one.

Amp Hours

More is Longer

Higher Amp Hours give you longer runtime.
(Doesn’t affect power or speed).

Check Dimensions

Ensure the new battery fits your device.

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FAQ Resource Hub
Which battery type is best for my application (golf cart, marine, RV, solar, mobility, industrial)?
The best battery depends on use: Lithium (LiFePO₄) offers longest cycle life (2,000–5,000 cycles), lightweight design, and high usable capacity, making it ideal for golf carts, RVs, marine, and solar. AGM/SLA are cost-effective, maintenance-free options for backup or starter needs, though cycle life is shorter. Flooded lead-acid works well for industrial or solar setups where maintenance is manageable. Always match voltage, dimensions, and charging compatibility to your system.
How long will my battery last?
Battery life means runtime (hours per charge) and lifespan (years/cycles). Runtime = (Voltage × Ah) ÷ Load. Example: a 48V 100Ah battery (4,800Wh) running a 1,000W motor lasts ~4.8 hours at 100% DoD. LiFePO₄ delivers 2,000–5,000 cycles; AGM/SLA typically 300–1,000. Calendar life averages 8–12 years for lithium and 3–7 for lead-acid.
How do I choose the right battery size?
Match voltage to system requirements (12V, 24V, 48V). Calculate daily energy use: load (W) × hours. Convert to Ah: Wh ÷ Voltage. Factor usable capacity: ~90% for lithium, ~50% for lead-acid. Add 10–20% margin for inefficiency.
Can I replace SLA/AGM with lithium?
Yes, but confirm compatibility. Voltage should match, and chargers must support LiFePO₄ profiles. Lithium needs a built-in BMS for protection. Ensure dimensions and terminals fit. Upgrading often gives double usable capacity, faster charging, and 3–5× cycle life.
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