Can it charge below freezing?

Yes. The built-in heater warms the cells so charging can proceed in cold conditions, which most unheated lithium batteries cannot do.

How much usable energy does one unit hold?

It stores 5.12 kWh, enough to run a refrigerator, lights, router and small electronics overnight. Stacking units adds capacity.

What inverter does it work with?

It is a 48V (51.2V nominal) battery, so it pairs with 48V hybrid and off-grid inverters. Check that your inverter's charge profile supports LiFePO4.

Does it need a separate BMS?

No. The 100A BMS is built in and handles cell balancing, over-current and temperature protection.

How long will it last?

Vatrer rates it at over 5000 cycles at 100% depth of discharge, well beyond the few hundred cycles typical of lead-acid.

Vatrer 48V (51.2V) 100Ah WiFi Heated Server Rack Lithium Solar Battery CA - 1 PACK

Best price now

$929.99at VatrerChecked Nov 12

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Vatrer 48V (51.2V) 100Ah WiFi Heated Server Rack Lithium Solar Battery CA - 1 PACK

Best price now

$929.99at VatrerChecked Nov 12

Prices are checked against each store and labelled with when.

Visit Vatrer

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Price facts

Last seen at $929.99 at Vatrer on Nov 12.

Our take on the Vatrer 48V (51.2V) 100Ah WiFi Heated Server Rack Lithium Solar Battery CA - 1 PACK

The Vatrer 48V 100Ah is a 5.12 kWh LiFePO4 server-rack battery built for home solar and backup systems. It stands out for its built-in heating, which lets it charge in freezing conditions where many lithium batteries shut down, and for a 100A smart BMS that watches voltage, current and temperature. Its 5000+ cycle rating at full depth of discharge is far beyond lead-acid, and its rack format suits stacked 48V banks. It is aimed at off-grid and backup installers rather than casual users, and rivals like EG4 and SOK offer similar rack batteries with comparable capacity and cycle life.

Best forHome solar storage and overnight backupCold-climate or unheated battery roomsRack-mounted 48V off-grid banksOwners replacing lead-acid banks

Pros

Built-in heating allows charging in sub-freezing temperatures
5.12 kWh per unit from EV-grade LiFePO4 cells
5000+ cycles at 100% depth of discharge
100A smart BMS monitors voltage, current and temperature
Standard server-rack form factor for stacked banks

Cons

Heavy unit that needs two people to rack
Heating draws from the battery's own stored energy
Needs a compatible 48V inverter and rack setup

Vatrer 48V (51.2V) 100Ah WiFi Heated Server Rack Lithium Solar Battery CA - 1 PACK prices at every store

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$929.99Free shippingChecked Nov 12
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Vatrer 48V (51.2V) 100Ah WiFi Heated Server Rack Lithium Solar Battery CA - 1 PACK price history

Lowest price we've seen: $929.99 on Nov 12 at Vatrer. Tracked across 1 store since Nov 12.

About the Vatrer 48V (51.2V) 100Ah WiFi Heated Server Rack Lithium Solar Battery CA - 1 PACK

This is a 48V (51.2V) 100Ah lithium iron phosphate (LiFePO4) server rack battery with 5120Wh (5.12kWh) of energy storage. It uses EV-grade cells and supports over 5000 charge cycles at 100% depth of discharge. It is meant for solar and backup energy systems.

A built-in 100A smart BMS monitors voltage, current and temperature in real time. It protects against overcharge, overdischarge, overcurrent, short circuit and extreme temperatures, and it balances the individual cells. A self-heating function turns on during charging when the battery temperature drops to 32°F. Heating stops once the battery reaches 41°F, and normal charging continues.

A touchscreen display, WiFi module and Bluetooth let you check state of charge, voltage, current, temperature and battery status locally or through the Vatrer app. The WiFi module also allows remote monitoring, configuration changes, OTA firmware upgrades and multi-battery management. The rack-mount case fits energy storage cabinets or battery racks. It can be installed horizontally or vertically.

Voltage: 48V (51.2V)
Capacity: 100Ah, 5120Wh (5.12kWh)
Chemistry: LiFePO4 (lithium iron phosphate), EV-grade cells
Cycle life: Over 5000 cycles at 100% depth of discharge
BMS: Built-in 100A smart BMS
Protection: Overcharge, overdischarge, overcurrent, short circuit, extreme temperature
Self-heating: Starts at 32°F during charging, stops at 41°F
Connectivity: WiFi, Bluetooth, touchscreen display, Vatrer app
Monitoring: State of charge, voltage, current, temperature, battery status
Installation: Server rack mount, horizontal or vertical
Expansion: Up to 10 units in parallel, up to 51.2kWh
Charging: 58.4V 20A LiFePO4 charger (about 5 hours to full), solar panels via 48V MPPT charge controller (about 1500W of solar input on a sunny day), or 30A DC-DC charger from a generator or vehicle system
Pack size: 1 battery

Questions and answers

Can it charge below freezing?: Yes. The built-in heater warms the cells so charging can proceed in cold conditions, which most unheated lithium batteries cannot do.
How much usable energy does one unit hold?: It stores 5.12 kWh, enough to run a refrigerator, lights, router and small electronics overnight. Stacking units adds capacity.
What inverter does it work with?: It is a 48V (51.2V nominal) battery, so it pairs with 48V hybrid and off-grid inverters. Check that your inverter's charge profile supports LiFePO4.
Does it need a separate BMS?: No. The 100A BMS is built in and handles cell balancing, over-current and temperature protection.
How long will it last?: Vatrer rates it at over 5000 cycles at 100% depth of discharge, well beyond the few hundred cycles typical of lead-acid.
Where is the Vatrer 48V (51.2V) 100Ah WiFi Heated Server Rack Lithium Solar Battery CA - 1 PACK cheapest?: At Vatrer, for $929.99, as of our latest check.