Manufacturer: Hulkman. Manufacturer Part Number: ['Sigma 1', 'Sigma 5', 10']. Item model number: Sigma 5. Wide Battery Compatibility Compatible with 6V and 12V lead-acid, as well as 12V lithium-ion batteries, including deep-cycle, AGM, lifepo4, flooded, gel, wet, maintenance-free, EFB, and calcium types.
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