V-TAC VT-48200B 9.6kWh 48V rack battery9.6kWh 48V 200Ah LiFePO4 rack battery, 100A

Overview

The VT-48200B (V-TAC SKU 11523) puts 9.6kWh into a single 19-inch unit: 200Ah of lithium iron phosphate at 48V nominal with 100A continuous charge and discharge. It measures 445×244×500mm, weighs about 81kg and has an LCD, DIP addressing and CAN/RS485 ports for combining up to 15 units with a control unit. V-TAC designs it for 48V hybrid and off-grid inverters as well as telecom backup; Deye lists it in its CEI 0-21 declaration for SG03LP1 inverters.

• 9.6kWh, 48V, 200Ah LiFePO4 in one 19-inch unit
• 100A continuous charge and discharge
• CAN and RS485, optional Modbus and SNMP
• LCD and DIP switch addressing 0–15
• Up to 15 units with a control unit
• Listed in Deye's CEI 0-21 declaration, 1–15 units

How it works

The VT-48200B packs 200Ah of lithium iron phosphate cells at 48V nominal into one rack chassis, for 9.6kWh. The rated charge voltage is 54.0V and the discharge cut-off 40.5V, with 100A continuous in both directions at 25°C. The BMS protects against over- and under-voltage, overcurrent, short circuit and temperature faults, balances the cells and reports data and alarms over RS485 or CAN; SNMP v2/v3, an anti-theft function and Modbus are listed as options.

V-TAC's discharge tables show about 10 hours at 0.1C and roughly two hours at 0.5C (100A) down to 40.5V; at a constant 1,920W the battery lasts about 4.8–5.1 hours depending on cut-off voltage. These figures help size backup time for a known load before choosing the number of units.

Installation

The unit measures 445×244×500mm and weighs about 81kg, so lifting needs two people or handling equipment. It mounts in a 19-inch rack or an existing cabinet; when several units are paralleled the manual asks for space between them. The housing is IP20, so the site must be dry and indoors; harsh environments need a climate-controlled cabinet rated IP55 or better. Charging is possible from 0°C to +60°C and discharging from -20°C to +60°C, with +15 to +35°C recommended.

Parallel systems and compatibility

Without a control unit RS485/CAN communication supports six batteries; with a control unit it supports up to 15. Each battery gets its address on the DIP switch: for CAN the master is 0 and the others count up, for RS485 the addresses run from 1 to 15. Connect all negative cables before the positive ones. Deye's CEI 0-21 declaration for SG03LP1 single-phase inverters lists the VT48200B with one to 15 modules, and V-TAC's 51.2V compatibility list includes SKU 11523 for Deye, Solis, Hoymiles, Victron GX and other inverters.

Questions and answers