The Renogy Core Mini 12V 300Ah LiFePO4 Battery 2-Pack (SKU RBT12300LFP-Mx2-US) includes two 12.8V 300Ah lithium iron phosphate batteries for a combined 7680Wh of dependable deep-cycle power — built for RVs, vans, campers, marine setups, and home or off-grid backup. Each battery uses a built-in 200A BMS with low-temperature protection that limits charging below 32°F and discharging below -4°F, adding a safeguard in cold-weather conditions without manual oversight. Each unit weighs just 55.1 lb in a compact 15.12" x 7.64" x 9.96" case that's 57% lighter than a comparable 12V 200Ah lead-acid battery and fits common 4D and 8D battery boxes. Grade-A prismatic LiFePO4 cells support 5000+ cycles at 80% depth of discharge, and the pair can be wired in series, parallel, or both — expandable up to a 4S4P, 61.44kWh system as your power needs grow.
This package includes two Core Mini batteries, each delivering 3840Wh, for 7680Wh of combined lithium storage. That capacity suits essential RV, marine, and off-grid loads — such as a refrigerator and small appliances — when paired with a properly sized inverter. Actual runtime depends on your specific loads and inverter, so heavier draws like air conditioning will draw down capacity faster.
The integrated 200A battery management system guards against overcharge, over-discharge, over-current, and short circuits, and self-balances cell voltage. Its low-temperature cut-off limits charging below 32°F (0°C) and use below -4°F (-20°C), helping protect the cells during winter travel and cold storage.
At 55.1 lb each, these batteries are manageable for one person to lift and install. The compact case is roughly 31% more space-efficient than many other 12V 300Ah LiFePO4 batteries and fits a range of enclosures, including 4D and 8D battery boxes, leaving more room for clean wiring and easier maintenance. An IP65 rating adds protection against dust and low-pressure water.
Each battery uses Grade-A prismatic lithium iron phosphate cells rated for 5000+ cycles at 80% depth of discharge — long-term durability that far outlasts traditional lead-acid. Both batteries are backed by a 5-year prorated material and workmanship warranty and carry MSDS, UN38.3, FCC, CE, PSE, RCM, RoHS, and UKCA certifications.
Two 12.8V 300Ah lithium batteries deliver 7680Wh of combined deep-cycle capacity for RVs, vans, marine builds, and home backup. The lightweight, compact design keeps installation and handling straightforward.
Renogy lists installation clearance guidance of 1.97" to 3.94" above the battery and at least 7.87" on the busbar side. Check these spacing requirements during layout planning to support safe access, clean wiring, and proper serviceability for both units.
Need help sizing the right lithium battery bank for your RV, boat, or off-grid setup?
Contact TrueStead Supply for capacity sizing, expansion guidance, and quote assistance.
✔ Battery sizing guidance
✔ Series & parallel expansion support
✔ RV, marine, home & off-grid options
| Brand | Renogy |
| Series | Core Mini |
| Model / SKU | RBT12300LFP-Mx2-US |
| Product Type | Deep-Cycle Lithium Iron Phosphate (LiFePO4) Battery |
| Configuration | 2-Pack (two 12.8V 300Ah batteries) |
| Nominal Voltage | 12V / 12.8V |
| Voltage Range | 10V to 14.8V |
| Rated Capacity (each) | 300Ah at 0.5C, 25°C |
| Rated Energy (each / combined) | 3840Wh each / 7680Wh combined |
| Maximum Charge Current | 150A |
| Maximum Discharge Current | 200A |
| Peak Discharge Current | 380A for 10 seconds |
| Cycle Life | 5000+ cycles at 80% depth of discharge |
| Built-in BMS | 200A, with low-temperature cut-off |
| Charge Temperature Range | 32°F to 140°F / 0°C to 60°C |
| Discharge Temperature Range | -4°F to 149°F / -20°C to 65°C |
| Storage Temperature Range | -4°F to 140°F / -20°C to 60°C |
| Connection Method | Series and parallel, up to 4S4P (expandable to 61.44kWh) |
| Protection Rating | IP65 |
| Terminal Bolt Size | M8 x 1.25 x 12 mm & M8 x 1.25 x 16 mm |
| Recommended Terminal Torque | 70.8 in·lb / 8 N·m |
| Dimensions (each) | 15.12" x 7.64" x 9.96" / 384 x 194 x 253 mm |
| Weight (each) | 55.1 lbs / 25.0 kg |
| Included Accessories (per battery) | 2 long terminal bolts (M8 x 1.25 x 16 mm), 2 terminal bolts (M8 x 1.25 x 12 mm), user manual |
| Certifications | MSDS, UN38.3, FCC, CE, PSE, RCM, RoHS, UKCA |
| Warranty | 5-year prorated material and workmanship warranty |
