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Custom Lithium
Next Generation 1250Ah Ultra Slim XL Lithium Battery
CL-US-1250AH-V3
Custom Lithium Next Generation 1250Ah Ultra Slim XL Lithium Battery The Custom Lithium Next Generation 1250Ah Ultra Slim XL Lithium Battery delivers exceptional energy capacity in a compact, space-efficient design. Perfect for 4×4 vehicles, RVs, marine applications, and off-grid solar…
$11,399.05$11,999.00 Save $599.95
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Custom Lithium Next Generation 1250Ah Ultra Slim XL Lithium Battery
The Custom Lithium Next Generation 1250Ah Ultra Slim XL Lithium Battery delivers exceptional energy capacity in a compact, space-efficient design. Perfect for 4×4 vehicles, RVs, marine applications, and off-grid solar systems, this battery provides reliable long-life performance for high-demand 12 V systems.
Constructed with premium LiFePO₄ cells and an advanced Battery Management System (BMS) with active cell balancing, this battery ensures maximum safety, stability, and longevity under continuous use. Its Ultra Slim XL design allows installation in large battery bays, under camper floors, or alongside other batteries, providing massive energy storage without the bulk of traditional deep-cycle batteries.
Benefits
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Extended off-grid power: Supports multi-day adventures without frequent recharging
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Space-efficient design: Slim XL form factor fits in tight battery bays
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High-load performance: Handles demanding electrical systems reliably
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Safe & reliable: BMS ensures stable performance and protection
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Maintenance-free operation: Unlike lead-acid, no equalizing or watering needed
Perfect For:
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4×4 and overland vehicles with large auxiliary battery banks
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RVs, camper trailers, and caravans needing extended run-time
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Marine vessels with high electrical demands
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Off-grid solar and inverter setups
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Remote expeditions, boondocking, and touring adventures
- 1250 Ah capacity: Massive energy storage for extended trips or heavy electrical loads Ultra Slim XL design:
CAPACITY1250AH
CONSTANT DISCHARGE380 AMPs
PEAK DISCHARGE1800AMP Protection
CONSTANT CHARGE100 AMPs
PEAK CHARGE200 AMPs
OPERATING TEMP-20°C – 60°C
TERMINALSM10 terminals
CHARGE VOLTAGE14.2v – 14.6v
ABSORPTION/FLOAT13.4v – 13.6v
CUT OFF VOLTAGE10.5v
NOMINAL VOLTAGE12.8V
