Felicity Solar FLA48400TG1 20.48kWh Battery

Felicity Solar FLA48400TG1 51.2V 20.48kWh LiFePO4 Battery

A 400 Ah floor-mounted LiFePO4 unit on a 51.2 V bus, the FLA48400TG1 carries 20.48 kWh of nominal energy, discharges 200-250 A continuously and accepts up to 200 A on charge.

  • Nominal Energy: 20.48 kWh
  • Nominal Capacity: 400 Ah
  • Nominal Voltage: 51.2 V
  • Cycle Life: >6000
AED 1incl. VAT

In stock

Full SpecificationsDownload datasheet (PDF)

Felicity Solar FLA48400TG1 51.2V 20.48kWh LiFePO4 Battery features

20.48 kWh of nominal energy, delivered as 400 Ah on a 51.2 V nominal bus

95% depth of discharge with a rated cycle life above 6000

200-250 A of continuous charge and discharge, with a 300 A / 10,200-13,000 W peak held for 15 seconds

Charging at up to 200 A, 57.6 V maximum and float charging voltage, 44.8 V cut-off, 44.8-57.6 V operating window

Built-in Smart BMS with breaker, fuse and MX+OF, reporting over CAN2.0, RS485, Wi-Fi and Bluetooth with LCD and LED readouts

Floor-mounted at 960 x 265 x 450 mm and 144 kg, rated IP21, with up to 15 units in parallel for 307.2 kWh

About the Felicity Solar FLA48400TG1 51.2V 20.48kWh LiFePO4 Battery

The Felicity Solar FLA48400TG1 is a floor-mounted LiFePO4 battery rated 400 Ah at 51.2 V nominal, which is 20.48 kWh of nominal energy. Depth of discharge is 95%, cycle life is above 6000, it charges at up to 200 A, and it sustains 200-250 A of continuous charge or discharge current. Short bursts are rated separately: the FLA48400TG1 holds 300 A, or 10,200-13,000 W, for 15 seconds. The operating window runs 44.8-57.6 V, with float and maximum charging voltage both at 57.6 V and cut-off at 44.8 V. Up to 15 units parallel into a 307.2 kWh bank. Protection is a built-in Smart BMS with breaker, fuse and MX+OF; the unit reports over CAN2.0, RS485, Wi-Fi and Bluetooth and carries an LCD alongside LED indicators. It measures 960 x 265 x 450 mm and weighs 144 kg, shipping in a 1040 x 481 x 570 mm carton at 167 kg gross. Rated IP21, charging 0-55°C, discharging -20 to 55°C, optimal 20-30°C, below 2000 m. Warranty: 5 Years. We are an authorised Felicity Solar distributor and supply the FLA48400TG1 from our own stock.

Specifications last updated 17 August 2026

Felicity Solar FLA48400TG1 51.2V 20.48kWh LiFePO4 Battery full specifications

Electrical

Battery TypeLiFePO4
Cut-Off Voltage44.8 V
Cycle Life>6000
Depth of Discharge95 %
Float Charging Voltage57.6 V
Max Charge/Discharge Power (15 s)10200-13000 W
Max Charging Current200 A
Max Charging Voltage57.6 V
Max Continuous Charge/Discharge Current200-250 A
Max Parallel Units15
Max System Capacity307.2 kWh
Nominal Capacity400 Ah
Nominal Energy20.48 kWh
Nominal Voltage51.2 V
Operating Voltage44.8-57.6 V
Peak Charge/Discharge Current (15 s)300 A
ProtectionBuilt-in Smart BMS, Breaker, Fuse, MX+OF

Mechanical

CommunicationCAN2.0, RS485, Wi-Fi, Bluetooth
Display TypeLCD, LED
InstallationFloor-Mounted
Package Dimensions1040 x 481 x 570 mm
Package Weight167 kg

Environmental

Charging Temperature Range0-55 °C
Discharging Temperature Range-20 to 55 °C
Operating Altitude<2000 m
Optimal Operating Temperature20-30 °C
Protection DegreeIP21
Storage Temperature Range0-35 °C

Related Products

Related Articles

How to Run a Whole House on Solar in Khartoum

An off-grid house is sized by surge, battery energy and charge current - and the surge row is the one that starts your fridge and your pump. Here are the published figures across the Felicity inverters and batteries, with the arithmetic to use them.

Read: How to Run a Whole House on Solar in Khartoum →

Solar for a Remote Site With Nothing to Fall Back On

A mast, a work camp, a holding or a guard post with no supply behind it. What changes when there is no grid to top the battery up: how much extra solar to carry, the four things that decide how long you last, whether the box can stand outside, and what remote monitoring can honestly promise.

Read: Solar for a Remote Site With Nothing to Fall Back On →

How to Build a Solar System That Runs a Whole Farm

Panels that will not fit the inverter you already own, and a battery bank you cannot grow without replacing it — both come from taking four decisions in the wrong order. Here is the order, and what each step rules out for the one after it.

Read: How to Build a Solar System That Runs a Whole Farm →