BigBattery Rhino

BigBattery Rhino: The 48V Wall-Mount Battery for Home and Off-Grid Storage

The BigBattery Rhino line is a 48V LiFePO4 wall-mounted battery built for one job: holding a large block of usable energy in a single enclosure and delivering it steadily to a 48V inverter. This collection currently lists one model, the RHINO 2 LiFePO4 Battery 48V 280Ah 14.34kWh, priced from $3,799. It is sold out at the moment, and this page explains what it is, who it suits and what to check if you are waiting for it or comparing it against other 48V units on the site.

Buyers who search for the big battery rhino are usually building or extending a home backup or off-grid system and want a battery that installs on a wall instead of in a rack, tolerates an outdoor location and carries enough capacity that one unit covers a full night of household load.

How to choose whether the Rhino fits your system

• Capacity per unit. The RHINO 2 stores 14.34kWh (280Ah at 48V). A typical essentials load of fridge, lights, router, furnace fan and chargers uses 8 to 12kWh a day, so one unit carries most homes through a night and a cloudy morning. Larger loads call for two units in parallel or a different platform.
• Output rating. BigBattery lists the RHINO 2 at 10,240W. That is enough headroom for a 10kW-class inverter, which in turn starts well pumps, sump pumps and most single-phase air handlers.
• Mounting location. The unit is wall-mounted and carries an IP65 rating, so it can sit on an exterior wall or in an unconditioned garage. Rack batteries need an enclosure and a dry room; the Rhino does not.
• Inverter match. The Rhino is designed to pair with 48V solar inverters and hybrid inverters. Confirm your inverter's battery voltage window and communication protocol before ordering; call us with the model number and we will check it.
• Certification. BigBattery states the RHINO 2 is UL-certified, which matters for permitted installations and for insurers in most US jurisdictions.

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Sizing tips

• Work from daily kWh. Add up the watt-hours of everything you want running during an outage; if it is under 12kWh, one RHINO 2 is a sensible target. Over that, plan on two.
• Use the Solar Kit Calculator with your appliance list and ZIP code. It sizes battery, inverter and panels together, so you can see whether 14.34kWh needs 3kW or 6kW of solar to refill in your region.
• Leave wall space for a second unit. Parallel expansion is the normal path with wall-mount batteries, and it is far easier when the conduit and mounting are planned for two from the start.
• Check the inverter's charge current. A 14.34kWh battery charged at a low amperage takes all day; make sure the inverter or charge controller can push enough current to refill it in the sun hours you have.
• While the Rhino is sold out, the BigBattery Batteries collection lists other 48V wall-mount units with similar capacity that ship now.

Frequently asked questions

When will the BigBattery Rhino be back in stock? We do not have a confirmed date. Call or email us and we will note your interest and let you know when the RHINO 2 is available again.

Can the RHINO 2 be installed outside? Yes. BigBattery rates the enclosure IP65, which covers rain and dust on an exterior wall. Keep it out of standing water and give it shade where possible.

Does one Rhino run a whole house? It runs the essentials for a day. Central air, electric water heating and electric ranges push daily use well past 14.34kWh; for those loads you would pair two units with a 10kW inverter and enough solar to recharge them.

When in stock, the BigBattery Rhino ships free to the mainland US from brand partner warehouses, usually within a few business days, with 30-day returns. If you are unsure whether a bigbattery rhino or another 48V unit is the right fit, call us and we will size it with you.