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Renogy

Renogy Core - 48V 50Ah Smart Lithium Iron Phosphate Battery w/Self-Heating (2 Pack)

SKU RBT4850LFPSHx2-US

Regular price: $1,383.99

Regular price: $1,383.99

✅ 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 2-pack of Renogy Core 48V 50Ah self-heating lithium iron phosphate batteries builds a 4,800Wh (4.8kWh) 48V bank — the efficient, low-current backbone for a cabin, shed, or small off-grid home. Each battery carries a 6,000+ cycle rating per Renogy, heats itself for charging below 32°F, and wears a sealed IP65-rated housing.

Who This Is For

Choose this pair if you are building a 48V system: off-grid cabins, sheds, pump houses, and backup banks paired with a 48V inverter charger such as the Renogy 48V 3500W pure sine wave solar inverter charger. At 48V, a 3,500W load draws only about 73A — well within this pair's 100A combined continuous discharge — which keeps cables thinner and losses lower than any 12V equivalent.

Key Features

Two 48V 50Ah LiFePO4 batteries — 100Ah and 4,800Wh connected in parallel
More than 6,000 cycles at 80% depth of discharge and 80% end of life, per Renogy
Self-heating engages automatically for safe charging below 32°F, per Renogy
50A maximum continuous charge and discharge per battery
Parallel expansion up to 8 batteries for a 19.2kWh maximum bank, per Renogy
Built-in BMS protection in a sealed IP65-rated ABS housing
51.4 lb per battery — one-person handling for a 2,400Wh module

Why Renogy

Renogy's Core series applies its LiFePO4 platform to modular 48V storage that scales one battery at a time. OffGrid Horizon is a family-owned authorized Renogy dealer — both batteries carry Renogy's US warranty and our direct support.

Specifications

SKU	RBT4850LFPSHx2-US (2 batteries)
Chemistry	Lithium iron phosphate (LiFePO4)
Nominal voltage	48V
Capacity per battery	50Ah / 2,400Wh
2-pack bank total (parallel)	100Ah / 4,800Wh at 48V
Cycle life (per Renogy)	More than 6,000 cycles (80% DOD, 80% EOL)
Max continuous charge / discharge	50A / 50A per battery (100A / 100A combined)
Self-heating	Automatic, enables charging below 32°F (per Renogy)
Charge / discharge temperature	32°F to 131°F (self-heating extends cold charging) / -4°F to 140°F
Communication	None — no built-in Bluetooth or comm port (per Renogy)
Expansion (per Renogy)	Parallel up to 8 batteries; 19.2kWh maximum
Protection rating	IP65
Terminals	2 x M8 x 1.25 x 20 mm bolts per battery
Dimensions per battery	15.1 x 7.6 x 9.8 in
Weight	51.4 lb per battery; 102.8 lb combined
Certifications (per Renogy)	MSDS, UN38.3, FCC, IC, UKCA, CE, PSE, RoHS
What's included	2 x Core 48V 50Ah batteries, terminal bolts, insulating sleeves, user manuals
Warranty	5-year prorated material and workmanship warranty per battery (per Renogy)
Documentation	Spec sheet (PDF) \| User manual (PDF)

Building a 48V Bank

These batteries parallel at 48V — no series stringing to design, no midpoint balancing to worry about. Start with this pair for 4.8kWh, then add identical batteries as loads grow, up to 8 in parallel and 19.2kWh per Renogy. Keep interconnect cables equal in length and gauge, land the main system cables diagonally across the bank for even current sharing, and bring new batteries to a matching state of charge before connecting. A 48V bank pairs naturally with 48V inverter chargers and keeps current — and copper costs — to a quarter of an equivalent 12V system.

Warranty & Support

Per Renogy, each battery carries a 5-year prorated material and workmanship warranty in the US — register both with Renogy after purchase. OffGrid Horizon is family-owned and an authorized Renogy dealer; call (302) 496-3554 for help matching charge parameters to your inverter.

Shipping

Combined weight is about 103 lb, so this order may ship as two parcels or on a freight pallet within the United States. For freight deliveries, inspect the packaging before signing the delivery receipt and note any damage with the driver. Report problems to us immediately — do not install a damaged battery.

Frequently Asked Questions

Is this a 48V or 51.2V battery?
Renogy rates the Core series at 48V nominal with 2,400Wh per battery. It is designed for standard 48V inverters and charge equipment with LiFePO4-compatible settings.

Does it have Bluetooth or an app?
No. Per Renogy's specifications, this model has no built-in Bluetooth and no communication port. Monitoring is typically handled at the inverter or with a shunt-based battery monitor.

How does cold-weather charging work?
Per Renogy, internal heating pads warm the cells automatically so the battery can charge safely below 32°F. Discharge is supported down to -4°F.

What inverter size can the pair support?
Combined continuous discharge is 100A, which at 48V supports roughly 4,800W. A 3,500W 48V inverter charger draws about 73A at full output, leaving comfortable margin.

Can I add more batteries later?
Yes — parallel up to 8 total (19.2kWh) per Renogy. Add the identical model and equalize state of charge before connecting.

Why choose 48V over 12V for a cabin?
Four times the voltage means one quarter the current for the same power: thinner cables, smaller fuses, less voltage drop, and better inverter efficiency at higher loads.

Mapping out a 48V cabin system? Call OffGrid Horizon at (302) 496-3554 — family-owned, authorized Renogy dealer — or browse the full Renogy collection.