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Renogy Mini 12V 300Ah LiFePO4 battery, 4 pack

Renogy

Renogy 4 Pack Mini Size 12V 300Ah LiFePO4 Battery

SKU RBT12300LFP-Mx4-US

Regular price: $3,419.99

Regular price: $3,419.99

✅ Order by 12:00 PM EST and processing starts the same day (ships within 1–2 business days). Free, insured US shipping — delivery in 4–7 business days. Oversized items ship via LTL freight and we coordinate delivery with you by phone.

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Shipping: how fast & how it works

Free standard shipping on every US order — no shipping charges at checkout, no hidden fees, and every shipment is insured against loss or damage.

Processing: 1–2 business days. Order before 12:00 PM EST and processing begins the same day.
Delivery: 4–7 business days via USPS, UPS or FedEx. Tracking is emailed the moment your order ships.
Large items (solar kits, batteries, shelters): delivered by LTL freight carriers such as FedEx Freight, Old Dominion or XPO. The carrier calls ahead to schedule a delivery window — please inspect the pallet and note any damage on the delivery receipt before signing, and we’ll take care of the rest.

Questions about delivery to your location? Call (302) 496-3554 (Mon–Fri, 9am–4pm EST) — we’re happy to check before you order.

What is your Return Policy?

At OffGrid Horizon, we want every customer to shop with confidence. If something doesn’t go as planned, we’ve made returns and refunds simple and fair. Here’s how it works:

1. Return Window

You can request a return within 30 days of receiving your order. Unfortunately, we’re unable to accept returns after that time frame.

2. Who Pays for Return Shipping?

If your item arrives damaged, defective, or incorrect, we’ll cover the return shipping cost — and you’ll receive a full 100% refund or replacement, including any original shipping costs.
If you’re returning an item because you changed your mind, you’ll be responsible for return shipping, and a 25% restocking fee applies.

3. Damaged or Defective Items

Received something broken or not working properly? Contact us within 30 days. We’ll provide a prepaid return label and once the item is returned and inspected, we’ll issue either a full refund or a replacement.

4. Changed Your Mind?

If you no longer want the item, you can return it within 30 days — as long as it’s unused, unopened, in its original packaging, and in resellable condition.

5. Refund Processing

Once we receive and approve your return, we’ll send a confirmation email and issue a refund to your original payment method within 7 business days. Please allow additional time for banks or credit card companies to process and reflect the refund.

How to start a return: email sales@offgridhorizon.com or call (302) 496-3554 (Mon–Fri, 9am–4pm EST) with your order number — we’ll send return instructions and your RMA right away.

Product Description

This four-pack of Renogy Core Mini 12V 300Ah LiFePO4 batteries is a full 15,360Wh (15.36kWh) of storage — a 12V 1,200Ah bank in parallel, or a 48V 300Ah bank in series. It is the foundation of a serious off-grid home, cabin, or bus build, assembled from compact 55.1 lb batteries with built-in low-temperature charge protection.

Who This Bank Is For

Off-grid households and cabins running full-size appliances, well pumps, and daily inverter loads; bus and large-RV conversions; and backup-power systems that need to carry a home through long outages. Four separate batteries let you configure 12V, 24V, or 48V (per Renogy's series rules) and move each 55.1 lb unit without equipment. The BMS blocks charging below 32°F to protect the cells; for recharging during hard freezes, consider Renogy's self-heating models.

Key Features

12V 300Ah / 3,840Wh per battery; 1,200Ah / 15,360Wh with all four in parallel
Rated for 5,000 cycles at 80% depth of discharge, per Renogy
Low-temperature protection: charging disabled below 32°F, discharge cutoff at -4°F
150A max continuous charge and 200A max continuous discharge per battery, 380A peak for 10 seconds, per Renogy
Compact Core Mini case: 15.12 x 7.64 x 9.96 in and 55.1 lb per battery
IP65-rated enclosure; M8 terminals with standard and long bolts included
Series, parallel, or series-parallel up to 4S4P (48V 1,200Ah / 61.44kWh), per Renogy

Why Renogy

Renogy is an established maker of off-grid solar and battery equipment, and publishes test and safety documentation for this battery (MSDS, UN38.3, FCC, CE, PSE, RCM, RoHS, UKCA). Its batteries, charge controllers, inverters, and monitoring hardware are specified to work together, which keeps system design and support straightforward.

Specifications

SKU	RBT12300LFP-Mx4-US (four batteries)
Chemistry	Lithium iron phosphate (LiFePO4)
Nominal voltage	12.8V per battery
Rated capacity (per battery)	300Ah / 3,840Wh (0.5C at 77°F), per Renogy
Bank totals	Four in parallel: 12V 1,200Ah / 15,360Wh. Four in series: 48V 300Ah / 15,360Wh
Cycle life	5,000 cycles (80% DOD), per Renogy
Max continuous charge current	150A per battery
Max continuous discharge current	200A per battery (380A peak, 10 seconds)
Low-temperature protection	Charging blocked at 32°F and below (resumes at 41°F); discharge cutoff at -4°F, per Renogy
Charge temperature range	32°F to 140°F
Discharge temperature range	-4°F to 149°F
Storage temperature range	-4°F to 140°F
Expansion	Up to 4 in series or 4 in parallel; 4S4P max (48V 1,200Ah / 61.44kWh), per Renogy
Dimensions (per battery)	15.12 x 7.64 x 9.96 in
Weight	55.1 lb per battery; about 220.4 lb for the set
Terminals	M8 (M8 x 1.25 x 12 mm and M8 x 1.25 x 16 mm bolts included); recommended torque 70.8 in-lb
Enclosure rating	IP65
Bluetooth	Not built in; use an external shunt-based battery monitor
Certifications	MSDS, UN38.3, FCC, CE, PSE, RCM, RoHS, UKCA, per Renogy
Warranty	5-year prorated material and workmanship warranty, per Renogy
What's included	4x Renogy 12V 300Ah Core Mini battery, terminal bolts (2 standard + 2 long per battery), 4x user manual
Documentation	User manual (PDF) · Renogy limited warranty (PDF)

Cold Weather, Explained

These batteries use low-temperature charge protection rather than heating. Below 32°F the BMS disconnects the charge circuit so ice-cold cells are not damaged; charging resumes automatically once the battery warms to about 41°F, per Renogy. Discharge continues down to -4°F, so loads keep running through cold nights. Large banks installed inside conditioned spaces rarely trip this protection; for exposed installs that must recharge in sustained freezes, Renogy's self-heating models are the better tool.

System Fit & Expansion

At 12V, four in parallel deliver up to 800A combined — far beyond what a single 12V inverter draws — so the Renogy REGO 3000W 12V split-phase inverter charger runs with wide margin, and its split-phase output can feed a 120/240V panel. Charge sources should stay within 150A per battery: pair the Renogy 800W solar kit with REGO 60A MPPT controller as a base array and expand with the Renogy 320W N-type panel four-pack. Per Renogy the batteries also support 24V and 48V series strings and expansion to 16 units (4S4P); series banks require inverters and controllers rated for that voltage.

Warranty & Support

Per Renogy, each battery carries a 5-year prorated material and workmanship warranty. OffGrid Horizon is a family-owned authorized Renogy dealer, so purchases here are eligible for Renogy US warranty service. Call (302) 496-3554 for help designing around this bank — wiring layout, fusing, and charge sources included.

Shipping

At over 220 lb of batteries, this four-pack ships LTL freight on a pallet within the US. Please inspect the pallet carefully before signing the delivery receipt; note any damage with the driver and call us at (302) 496-3554 so we can resolve it quickly.

Frequently Asked Questions

Should I wire 12V parallel or 48V series? Parallel keeps everything 12V and works with 12V inverters and chargers. A 48V series string cuts current and wire size for large loads but requires 48V-rated equipment throughout. Per Renogy, both are supported up to 4S4P with identical batteries.

Can I mix these with my older batteries? No. Build the bank only from identical 12V 300Ah Core Mini batteries of similar age and state of charge.

Can I charge from an alternator? Yes, through a DC-DC charger with a LiFePO4 profile. In a bank this size the alternator is usually a supplemental source alongside solar or shore charging.

What charger profile should I use? A lithium (LiFePO4) profile within the battery's 10V to 14.8V operating range, per Renogy. Flooded or AGM lead-acid profiles may not charge these fully or correctly.

How should I store the bank over winter? Disconnect loads and chargers, store within -4°F to 140°F at a partial state of charge, and top up periodically per the Renogy manual.

Is it safe to install indoors? LiFePO4 batteries do not off-gas during normal operation the way flooded lead-acid batteries do, so indoor battery rooms and compartments are common. Follow the Renogy manual's mounting, clearance, and temperature guidance, and fuse the bank properly.

How do I monitor 15kWh of storage? Use a shunt-based battery monitor at the bank negative; these batteries do not include Bluetooth.

A 15.36kWh bank deserves a considered design. Call OffGrid Horizon at (302) 496-3554 — we are a family-owned authorized Renogy dealer and will help you get the wiring and charge sources right the first time.