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  • SPX12-350 SigmasTek Battery (Replacement)

    Pro-Series High Rate Discharge AGM

    SPX12-350 SigmasTek Battery (Replacement)

    Our PSHR 12-380W is a true high rate discharge battery.  It is 12Volts 380Watts Per Cell at a 15min rate to 1.67V per cell.  The PSHR line offers solutions for standby and stationary backup, critical power / UPS equipment, high-output audio,...

    $184.85

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    $184.85

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  • SP12-9HR SigmasTek Battery (Replacement)

    Pro-Series High Rate Discharge AGM

    SP12-9HR SigmasTek Battery (Replacement)

    Our PSHR 12-36W is a true high rate discharge battery.  It is 12Volts 36Watts Per Cell at a 15min rate to 1.67V per cell.  The PSHR line offers solutions for standby and stationary backup, critical power / UPS equipment, high-output audio, and...

    $19.75

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    $19.75

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  • SPX120-300 SigmasTek Battery (Replacement)

    Pro-Series High Rate Discharge AGM

    SPX120-300 SigmasTek Battery (Replacement)

    Our PSHR 12-280W is a true high rate discharge battery.  It is 12Volts 280Watts Per Cell at a 15min rate to 1.67V per cell.  The PSHR line offers solutions for standby and stationary backup, critical power / UPS equipment, high-output audio,...

    $180.75

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    $180.75

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  • SP12-5.5HR SigmasTek Battery (Replacement)

    Pro-Series High Rate Discharge AGM

    SP12-5.5HR SigmasTek Battery (Replacement)

    Our PSHR 12-22W is a true high rate discharge battery.  It is 12Volts 22Watts Per Cell at a 15min rate to 1.67V per cell.  The PSHR line offers solutions for standby and stationary backup, critical power / UPS equipment, high-output audio, and...

    $15.25

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    $15.25

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  • SPX12-200 SigmasTek Battery (Replacement)

    Pro-Series High Rate Discharge AGM

    SPX12-200 SigmasTek Battery (Replacement)

    Our PSHR 12-200W is a true high rate discharge battery.  It is 12Volts 200Watts Per Cell at a 15min rate to 1.67V per cell.  The PSHR line offers solutions for standby and stationary backup, critical power / UPS equipment, high-output audio,...

    $128.25

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    $128.25

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  • SPX12-150 SigmasTek Battery (Replacement)

    Pro-Series High Rate Discharge AGM

    SPX12-150 SigmasTek Battery (Replacement)

    Our PSHR 12-125W is a true high rate discharge battery.  It is 12Volts 125Watts Per Cell at a 15min rate to 1.67V per cell.  The PSHR line offers solutions for standby and stationary backup, critical power / UPS equipment, high-output audio,...

    $90.50

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    $90.50

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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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