ommaTech Modular Series 51.2V 102Ah G2 Lithium Battery
The TommaTech Modular Series 51.2V 102Ah G2 is designed for low-voltage energy-storage systems using a 51.2V nominal battery platform.
Each battery provides 102Ah capacity and a published energy value of 5,222.4Wh. The integrated BMS provides active balancing together with monitoring and protection functions covering overcharge, over-discharge, overcurrent, short circuit and excessive temperature.
The manufacturer specifies a recommended charge and discharge current of 50A and a maximum charge and discharge current of 75A under defined conditions.
Up to 16 identical batteries may be connected in parallel to increase system energy capacity. Series connection is not permitted.
CAN, RS485 and Bluetooth communication are specified in the dedicated technical datasheet, while an LCD provides local battery information.
The Modular G2 model shares its core electrical specifications with the Rack G2 product but uses a different enclosure and installation format. For an international B2B website, the two products should therefore remain separate so that buyers can select the appropriate physical architecture.
Main Advantages
- 51.2V nominal battery architecture
- 102Ah capacity
- 5.2224kWh published energy
- LiFePO4 prismatic cells
- Active-balancing BMS
- CAN / RS485 / Bluetooth
- LCD display
- Up to 16 units in parallel
- Integrated electrical and thermal protection functions
- Metal enclosure
- Five-year product warranty stated by the manufacturer
Technical Architecture
The product uses a 51.2V LiFePO4 battery platform with integrated BMS supervision and communication.
Parallel connection increases battery-bank capacity without changing the nominal system voltage.
The battery communicates operating information through CAN or RS485 with compatible equipment, while Bluetooth provides additional communication capability.
How It Works
A compatible inverter/charger manages charging and discharging of the battery.
The BMS monitors operating conditions and protects the cells against electrical and thermal limits.
When multiple batteries are installed, identical units operate as a parallel battery bank to increase available energy and current capability.
Intended Applications
- Residential solar energy storage
- Commercial low-voltage ESS
- Compatible hybrid inverter systems
- Backup-power systems
- Modular storage installations
Compatibility
Exact inverter/BMS compatibility must be verified before quotation.
Do not assume compatibility based only on:
- 48V/51.2V classification
- CAN port availability
- RS485 port availability
The communication protocol and inverter firmware must also be compatible.
Engineering and Selection Notes
One battery may provide sufficient energy but insufficient current for a high-power inverter.
Battery quantity must therefore be determined using both:
- energy requirement in kWh
- battery-side current/power requirement
Important Technical Notes
The dedicated technical datasheet clearly specifies CAN / RS485 / Bluetooth for this model.
Do not reproduce the copied CW page wording suggesting Bluetooth is only applicable to 25.6V batteries.
Do not publish the product as IP65 without clarification because the datasheet uses the broader wording “IP20–IP65”.
Information Required Before Quotation
- Exact inverter model
- Firmware where relevant
- Required kWh capacity
- Inverter rated power
- Maximum battery charge current
- Maximum battery discharge current
- Required autonomy
- Installation temperature
- Installation environment
- Required number of batteries
- Destination country
- Required technical certificates
Recommended Call to Action
Send us your inverter model, required storage capacity and maximum system power so that battery quantity and communication compatibility can be verified before quotation.
