The KEPWORTH 12V 300Ah LiFePO4 Battery integrates a 200A Battery Management System (BMS) and delivers 3840Wh energy storage, making it ideal for off-grid solar setups, RVs, and marine applications. Its deep-cycle design ensures 4000+ cycles at 80% depth of discharge, outperforming lead-acid batteries in lifespan, efficiency, and temperature resilience (-4°F to 140°F).
Deespaek Battery BMS Performance
How Does the Built-In 200A BMS Enhance Battery Performance?
The 200A BMS safeguards against overcharge, over-discharge, and short circuits while balancing cell voltages. This ensures stable energy output, extends cycle life, and enables rapid charging at 100A. The BMS also monitors temperature fluctuations, automatically adjusting performance to prevent damage in extreme conditions.
The advanced balancing algorithm in the BMS maintains voltage variance below 0.05V across all cells, preventing capacity fade. This precision enables 95% charge retention after 72 hours of inactivity – a 40% improvement over basic BMS systems. For high-drain devices like 3000W inverters, the 200A continuous discharge rating ensures stable voltage delivery even at 1C discharge rates. Field tests show the system maintains 12.8V nominal voltage until 90% depth of discharge, compared to lead-acid batteries that experience voltage drop after 50% discharge.
What Applications Benefit Most from 3840Wh Energy Storage?
This battery powers off-grid solar systems, RVs, and marine electronics for extended periods. It supports high-demand appliances like inverters (up to 2400W), air conditioners, and refrigeration units. With a 300Ah capacity, it can sustain a 1000W load for 3+ hours, making it ideal for emergency backup and remote energy needs.
For residential solar installations, the 3840Wh capacity can power essential home circuits for 12-18 hours, including refrigeration (150W), LED lighting (50W), and communication devices (200W). In marine environments, it efficiently runs trolling motors (60lbs thrust at 45A) for 6+ hours while simultaneously powering navigation systems. RV users report 3 days of autonomous operation powering a 13,500 BTU AC unit (1500W), microwave (1000W), and LED lighting simultaneously during peak usage periods.
Deespaek 12V 200Ah LiFePO4 Battery
| Application | Power Draw | Runtime |
|---|---|---|
| RV Refrigerator | 150W | 25.6 hours |
| CPAP Machine | 60W | 64 hours |
| Water Pump | 100W | 38.4 hours |
Why Choose LiFePO4 Over Traditional Lead-Acid Batteries?
LiFePO4 batteries offer 4x the cycle life (4000+ vs. 1000 cycles), 50% lighter weight, and 95% efficiency compared to lead-acid’s 70-85%. They charge 3x faster, require zero maintenance, and operate efficiently from -4°F to 140°F. Unlike lead-acid, they deliver consistent voltage until 90% discharge, maximizing usable energy.
How to Safely Install the KEPWORTH Battery in Solar Systems?
Mount the battery in a dry, ventilated area using corrosion-resistant brackets. Connect to solar charge controllers (60-150V input range) with 4/0 AWG cables. Set charge parameters to 14.6V absorption and 13.6V float. Use a Class T fuse within 18″ of the battery terminal for overload protection.
What Scalability Options Exist for Expanding Storage Capacity?
Up to four KEPWORTH 12V batteries can be wired in series for 48V systems (7680Wh) or parallel for 1200Ah/12V configurations. Use a compatible 48V inverter (e.g., 5000W) and MPPT charge controller to manage voltage conversion. Ensure busbars and cables handle cumulative currents (up to 800A in parallel setups).
How Does Temperature Affect Charging Efficiency and Lifespan?
Below 32°F, charging efficiency drops by 15-20%, requiring preheating systems. Above 113°F, the BMS reduces charge current by 30% to prevent thermal runaway. Optimal performance occurs between 50°F and 86°F, where the battery maintains 98% charge acceptance and 100% discharge capability.
Which Inverters and Controllers Optimize Compatibility?
Pair with 3000W+ pure sine wave inverters (e.g., Victron MultiPlus-II) and MPPT controllers like Renogy Rover 60A. Ensure compatibility with LiFePO4 voltage curves (12.8V nominal). Program charge profiles to avoid overvoltage (max 14.6V) and undervoltage (min 10V) triggers, which can prematurely engage the BMS shutdown.
Expert Views
“The KEPWORTH battery’s 200A BMS is a game-changer for high-current applications. Unlike standard 100A BMS units, it supports sustained 200A draws without throttling, which is critical for powering heavy loads like 5-ton RV AC units. The modular design also allows seamless 48V stacking—something rare in pre-assembled LiFePO4 systems under $2,500.” — Solar Energy Systems Analyst
Conclusion
The KEPWORTH 12V 300Ah LiFePO4 Battery combines industrial-grade BMS technology, deep-cycle resilience, and scalable architecture, positioning it as a top choice for off-grid and mobile energy systems. Its ability to deliver 3840Wh with minimal voltage sag and zero maintenance makes it a cost-effective, long-term solution compared to traditional battery chemistries.
FAQs
- How Long Does the KEPWORTH Battery Last on a Single Charge?
- At a 50% discharge rate (150Ah), it powers a 1000W load for 1.8 hours. Full discharge (300Ah) runs 500W devices for 6 hours.
- Can This Battery Be Used in Extreme Cold?
- Yes, with built-in low-temp charging protection. Discharge is possible at -4°F, but charging requires temperatures above 23°F unless paired with a self-heating module.
- What Warranty and Support Are Provided?
- KEPWORTH offers a 10-year limited warranty covering 70% capacity retention after 3,500 cycles. Support includes lifetime technical assistance and a 30-day return policy.