GRANKIA LFP50-12.8 RV lithium battery is a 12.8V 50Ah LiFePO4 drop-in replacement designed for RV power systems. It offers long cycle life (6000+ cycles), lightweight design, built-in BMS protection, and seamless compatibility with lead-acid battery setups—making it an ideal upgrade for reliable off-grid and mobile energy storage.
As a premium 12.8V 50Ah lithium battery drop-in solution, this battery offers a seamless replacement for traditional lead-acid or AGM batteries. This battery delivers superior safety by integrating advanced Lithium Iron Phosphate (LiFePO4) chemistry. It offers a longer cycle life. It ensures consistent power output, making it the ideal choice for modern off-grid adventures.

What is the LFP50-12.8 RV Lithium Battery?
The LFP50-12.8 RV lithium battery is a compact and high-performance LiFePO4 battery. It is engineered specifically for recreational vehicles (RVs). This includes camper vans and mobile power systems.
Unlike traditional lead-acid batteries, this rv lithium battery 50Ah 12.8V provides:
- Stable voltage output
- Faster charging efficiency
- Deep cycle capability
- Maintenance-free operation
It is a true drop-in replacement, meaning you can upgrade your RV battery system without modifying your existing setup.
50AH Lithium Battery Features
True Drop-In Replacement
- Compatible with AGM, GEL, and SLA batteries
- No wiring or system redesign required
- Plug-and-play installation
Long Cycle Life (6000+ Cycles)
- 5–10x longer lifespan than lead-acid batteries
- Reduces total cost of ownership
Lightweight & Compact
- Up to 50% lighter than traditional batteries
- Ideal for RVs where weight matters
Built-In Smart BMS Protection
- Overcharge protection
- Over-discharge protection
- Short circuit protection
- Temperature control
High Efficiency Energy Storage
- 95% usable capacity
- Fast charging capability
- Stable discharge performance
Typical Applications
-
Solar energy storage systems
-
RVs, campers, and marine power
-
Backup power for home and office
-
Electric scooters, wheelchairs, and mobility devices
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Portable power stations and off-grid solutions
Technical Specifications
| Parameter | Value |
|---|---|
| Model | LFP50-12.8 |
| Battery Type | LiFePO4 (Lithium Iron Phosphate) |
| Nominal Voltage | 12.8V |
| Capacity | 50Ah |
| Energy | 640Wh |
| Cycle Life | 6000+ cycles |
| Charging Voltage | 14.4V – 14.6V |
| Discharge Cut-off | 10V |
| Weight | 5.75 kg |
| Protection | Built-in BMS |
Applications
- Recreational Vehicles & Campers: Powering lights, water pumps, and small appliances.
- Marine & Boats: Trolling motors and onboard electronics.
- Solar Energy Storage: Storing energy generated by solar panels for off-grid use.
- Backup Power: UPS systems and emergency lighting.
Why Upgrade to an RV Lithium Battery?
Switching to a rv lithium battery like the LFP50-12.8 provides significant advantages:
Longer Lifespan
No need for frequent battery replacement.
Faster Charging
Recharge in a fraction of the time compared to lead-acid batteries.
Deep Discharge Capability
Use up to 90–100% of capacity without damage.
Maintenance-Free
No water refilling or corrosion issues.
Frequently Asked Questions (FAQ)
1. Can I replace my lead-acid battery with this RV lithium battery?
Yes. The LFP50-12.8 is a drop-in replacement, compatible with most 12V systems.
2. How long does a 50Ah RV lithium battery last?
It can last 6000+ cycles, equivalent to 8–10 years depending on usage.
3. Is this LiFePO4 battery safe for indoor use?
Absolutely. It uses LiFePO4 chemistry and includes a built-in BMS. This makes it safe for indoor installations within your RV or camper. It emits no harmful fumes.
4. Can I use this 12.8V lithium battery for my solar system?
Yes, the LFP50-12.8 is an excellent lithium battery for solar storage. It efficiently stores energy from solar panels and handles the variable charging currents typical of solar setups.
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