Pytes Batteries

Pytes Batteries: 48V Solar Batteries for Off-Grid and Backup Storage

Pytes builds 51.2V lithium iron phosphate (LiFePO4) server rack batteries for homes that store solar energy or want backup through an outage. These are not portable units. Each Pytes V5 is a 5.12kWh, 100Ah module that slides into a standard rack or the matching cabinet and connects to a 48V hybrid or off-grid inverter. Among the solar batteries we sell, Pytes is the pick for buyers who want a rack system they can start small and grow later.

This collection currently holds two Pytes products: the single V5 module from $1,550 and a four-battery 20.48kWh outdoor cabinet bundle from $7,499. Both are rated for 6,000+ cycles and carry a 10-year warranty, so they suit daily cycling on a solar array as well as standby backup.

How to choose between the Pytes options

• How many kilowatt-hours you need. A fridge, well pump, furnace blower, lights and internet through a night typically draw 5 to 10kWh. One Pytes V5 LiFePO4 5.12kWh Server Rack Battery covers a light night; two cover most households; the Pytes V5 20.48kWh Outdoor Cabinet System gives two to three days of essential loads without sun.
• Indoor rack or outdoor cabinet. A single V5 needs a rack or enclosure in a garage, utility room or basement. The 20.48kWh bundle ships as a V-BOX-OC cabinet rated IP55, so it can sit against an exterior wall next to the inverter, which saves indoor floor space and long DC cable runs.
• Inverter compatibility. Pytes batteries communicate with the inverter over RS485 or CAN. The product listings note closed-loop support for Sol-Ark, EG4, Growatt, LuxPower and Victron systems. Check that your inverter is on the list before you order, because closed-loop communication is what lets the inverter read state of charge instead of guessing from voltage.
• Room to expand. Modules parallel together, so a buyer who starts with one V5 can add more as budget allows. If you already know you want more than 15kWh, the cabinet bundle is cheaper per kilowatt-hour than buying four singles plus a rack.

Popular picks in this collection

Sizing tips

• Start with the Solar Kit Calculator. Enter your appliances and ZIP code and it estimates how many kilowatt-hours of battery, how much inverter and how many panels your home needs, which tells you whether one V5 or the four-pack fits.
• Match battery count to inverter charge current. A single 5.12kWh module charging from a large array can hit its current limit; spreading the charge across two or more modules is gentler on the cells and lets you use more of a big array.
• Plan for winter. Cold-weather cycling should stay within the temperature range on the datasheet; a garage or the outdoor cabinet against a heated wall is usually enough in most of the mainland US.
• Leave headroom. Sizing the bank at about 20 percent more than your calculated nightly draw keeps depth of discharge lower and extends the number of years you get out of the 6,000-cycle rating.

Frequently asked questions

Can Pytes batteries run a whole house off-grid? With enough modules, yes. The 20.48kWh cabinet paired with a 48V hybrid inverter and a suitably sized array handles a typical off-grid home; heavy loads like electric heat or a large well pump push you toward adding modules.

Do I need a separate rack for one V5? The single V5 is a rack-mount module. You can install it in a standard server rack or an enclosure that accepts it; the outdoor cabinet bundle includes its own housing.

Are these the same as portable power stations? No. Pytes batteries have no inverter or outlets built in. They store DC energy at 51.2V and depend on an external inverter for 120/240V AC, which is what makes them a fit for permanent home systems rather than camping.

Whether you are browsing solar batteries for sale for a first install or expanding a rack you already own, both Pytes options ship free to the mainland US from our partner warehouse, usually within a few business days, with 30-day returns. Call us if you want help confirming inverter compatibility before ordering.