What Are Specs Of 300Ah LiFePO4 Batteries?

300Ah LiFePO4 batteries provide high-capacity energy storage with 12V or 51.2V configurations, delivering 3840Wh to 15,360Wh. Designed for 4,000–15,000 deep cycles, they feature built-in BMS (100A–200A), low-temperature protection, and certifications like UL/FCC. Ideal for RVs, solar systems, and marine applications, their lithium iron phosphate chemistry ensures safety and a 10-year lifespan with proper maintenance. 12V 90Ah LiFePO4 Car Starting Battery (CCA 1300A)

What voltage options exist for 300Ah LiFePO4 batteries?

Common models include 12V (single unit) and 51.2V (modular systems). The 12V variant suits RVs and boats, while 51.2V configurations support high-voltage solar arrays. Pro Tip: Verify your system’s voltage compatibility—mismatches can trigger BMS shutdowns.

Most 12V 300Ah LiFePO4 batteries use 4 cells in series, while 51.2V systems combine sixteen 3.2V cells. For example, a 51.2V 300Ah pack stores 15.36kWh—enough to power a small off-grid cabin for 24 hours. Importantly, higher voltage systems reduce current draw, minimizing heat buildup in wiring. However, transitioning from 12V to 51.2V requires upgrading inverters and charge controllers. One user retrofitted their solar setup with a 51.2V bank, cutting copper losses by 75%.

How do BMS specifications vary across models?

Built-in BMS units range from 100A to 200A continuous discharge. Higher-rated BMS supports power-hungry devices like inverters. LCD screens (on premium models) display real-time SOC and fault codes.

A 200A BMS in LiTime’s 12V 300Ah battery allows 2560W peak loads—sufficient for 2000W inverters. Budget options like CHINS use 100A BMS, limiting output to 1280W. For marine trolling motors requiring 80A sustained draw, choose BMS with 30% overhead capacity. GLCE’s 100A smart BMS includes temperature-compensated charging, preventing overvoltage in hot engine compartments. Remember, undersized BMS triggers premature shutdowns during motor starts. Pro Tip: Opt for Bluetooth-enabled BMS (like AmpereTime’s models) to monitor cell balancing via smartphone.

What defines cycle life in 300Ah LiFePO4 batteries?

Cycle longevity depends on depth of discharge (DOD) and temperature. Manufacturers claim 4,000–15,000 cycles at 80% DOD. Properly maintained batteries last 10+ years.

LiFePO4 cells degrade slower than NMC—GLCE’s 51.2V model retains 80% capacity after 6,000 cycles. Comparatively, lead-acid fails after 500 cycles. For solar storage cycling daily, a 300Ah battery provides 8–12 years of service. Cold climates pose challenges: sub-32°F charging requires heated batteries or reduced C-rates. A case study showed an Alaskan off-grid system using heated 12V 300Ah packs maintained 95% capacity over 5 winters. Pro Tip: Store batteries at 50% SOC if idle for months to prevent stress.

Which applications benefit most from 300Ah capacity?

High-demand uses include RV house banks, marine thrusters, and solar storage. A single 12V 300Ah unit powers a 2000W inverter for 90 minutes at full load.

For RVs, two 300Ah batteries run air conditioners for 4–6 hours nightly. Marine applications leverage their vibration resistance—unlike lead-acid, LiFePO4 won’t spill acid during rough seas. Solar farms use 51.2V 300Ah racks to store 30kWh+ per cabinet. Notably, their 98% efficiency outperforms AGM’s 85%, saving 150kWh annually in a mid-sized system. One solar installer reported 300Ah batteries reducing client generator runtime by 70%.

Redway Power Expert Insight

FAQs