Free Economy ShippingProduct Specifications for NOCO NLXU1 12V 40Ah Lithium Dual-Purpose Battery (Group U1)
| BM Part #: | NLXU1 |
|---|---|
| Voltage: | 12.8 Volt |
| Cold Cranking Amps: | 600 CCA |
| Capacity: | 40 Ah |
| Energy Capacity: | 512 Wh |
| Type: | LiFePO4 |
| Length: | 5.19" |
| Width: | 7.76" |
| Height: | 6.69" |
| Shipping Weight: | 15.00Lbs |
| Warranty: | 5-Year Limited |
| Product Manual: | Download |
What's in the box:
- NLXU1 12V 40Ah Lithium Dual-Purpose Battery
- (2) Type X Terminal
- (2) 3/8"-24 X 9/16” Terminal Bolts
- (2) 1/4"-20 X 7/16” Terminal Bolts
- (2) Terminal Covers
- (2) Hex Keys
- Safety & Warranty Information
- 600-Amp Starting Power: Cranks engines with twice the punch of a comparable lead-acid battery.
- 40Ah Deep-Cycle Capacity: Runs lights, pumps, and electronics for hours without losing voltage.
- Rapid Recharge: Goes from empty to full in as little as 48 minutes with a compatible charger.
- Drop-In Group U1 Fit: Matches standard U1 dimensions, so it swaps into your existing tray.
- Built-In Battery Management System: Guards against overcharge, over-discharge, short circuits, and extreme temperatures.
- IP66 Weatherproof Housing: Handles dust, splashes, and vibration in marine, RV, or outdoor use.
Product Description
Tired of your lead-acid battery losing power in the cold, taking all day to recharge, or dying long before it should? The NOCO NLXU1 swaps that old Group U1 battery for a lithium upgrade that starts stronger, runs longer, and charges in a fraction of the time.
One Battery, Two Jobs
The NLXU1 is a dual-purpose battery, meaning it doesn't force you to choose between starting power and deep-cycle capacity. It delivers 600 amps of peak cranking power to start your engine, then switches to steady, reliable output to run your accessories, lights, or electronics for hours.
Lithium Advantages You'll Actually Notice
Lead-acid batteries lose capacity as they age, sulfate when left sitting, and get heavier every year they're on the market. The NLXU1's lithium iron phosphate (LiFePO4) chemistry skips all of that.
- No sulfation or acid stratification, so performance stays consistent over time
- About 12 pounds, roughly half the weight of a comparable lead-acid battery
- Rated for thousands of charge cycles, far outlasting traditional batteries
Charges While You Wait, Not While You Sleep
A dead lead-acid battery can take all night to recharge. The NLXU1 uses a 1C charge rate, so it can go from empty to full in under an hour with the right charger. Pair it with a NOCO GENIUSPRO50 for a full charge in about 48 minutes, a GENIUSPRO25 for roughly 1.6 hours, or a GENIUS10 for a 4-hour recharge.
Built to Handle Real-World Conditions
An IP66-rated case seals out dust, splashes, and moisture, so the NLXU1 holds up in marine, RV, and outdoor applications. Inside, an active Battery Management System continuously watches voltage, current, and temperature, protecting the battery from overcharge, over-discharge, and short circuits without ever needing a manual reset.
Drop-In Simple
Built to standard BCI Group U1 dimensions, the NLXU1 fits directly into your existing battery tray. Terminal hardware, including Type X terminals and multiple bolt sizes, is included in the box, so you can match your current connections without buying extra parts.
Ready to leave lead-acid behind? Add the NOCO NLXU1 to your cart and get a lighter, faster-charging battery that's built to outlast the one you have now.
Frequently Asked Questions
Will the NLXU1 fit in my current Group U1 battery tray or box?
A: Yes. The NLXU1 is built to standard BCI Group U1 dimensions (6.69" H x 7.76" W x 5.19" D), so it drops into most existing U1 trays and boxes without modification.
Can I use my old lead-acid charger with this battery?
A: Many lead-acid chargers will work, but for the fastest, safest charging we recommend a lithium-compatible charger like the NOCO GENIUS10, GENIUSPRO25, or GENIUSPRO50.
Do I need to reset or activate the battery management system before use?
A: No. The built-in BMS is auto-enabled and requires no manual reset, so the NLXU1 is ready to install and use right out of the box.
Can I connect multiple NLXU1 batteries together for more power?
A: Yes. Up to four NLXU1 batteries can be wired in series or parallel to increase voltage or capacity, giving you flexibility for larger systems.
Is this battery safe to install in an enclosed space, like a boat or RV compartment?
A: Yes. The IP66-rated case is sealed against dust and moisture, and the lithium iron phosphate chemistry doesn't off-gas or leak acid like traditional batteries.
