T-BAT-Charger
Dedicated Solax Power charger for Triple Power high-voltage (HV) batteries: allows direct charging of T-BAT batteries by bypassing the inverter, with precise control of the state of charge (SOC) to ±1%. Supports simultaneous charging of up to 2 batteries in series, integrated LED display for local configuration, overload protection. Global voltage range 180–264 V AC. Weight 7.1 kg — IP20.
The Solax T-BAT-Charger is the dedicated charger for Triple Power high-voltage (HV) batteries from the Solax Power series. It is designed for situations where the battery cannot be charged through the hybrid inverter — for example, during initial commissioning, after a deep discharge, or during maintenance — the T-BAT-Charger restores the correct state of charge (SOC) safely, quickly, and in a controlled manner, completely bypassing the inverter.
When is the T-BAT-Charger needed?
In a photovoltaic system with storage, there are scenarios where the inverter cannot start charging the battery: SOC too low for activation, batteries disconnected for a long time, or maintenance needs with the battery removed from the main system. The T-BAT-Charger is the official Solax solution for these cases: it charges the battery directly from the AC grid, with no need for active photovoltaic production, and brings the system back to an operational SOC in a short time.
T-BAT-Charger Technical Specifications
| Battery compatibility | T-BAT HV Series (T-BAT-5.8, T-BAT-H, TP-HS50E) |
| AC input voltage | 180–264 V (global compatibility) |
| Frequency | 50/60 Hz |
| SOC control accuracy | ±1% |
| Batteries manageable | Up to 2 in series (or 1 with BMS T-BAT-5.8 V1/V2) |
| Display | Local LED for configuration and status |
| Protection | Integrated overload protection |
| Operating temperature | 0°C – 50°C |
| Protection rating | IP20 (indoor use) |
| Dimensions | 402 × 150 × 256 mm |
| Weight | 7.1 kg |
| Firmware update | Via USB (USB 2.0 or higher) |
Precise SOC Control: Why It Matters
The T-BAT-Charger does more than just "charge" the battery: it actively manages it through direct communication with the integrated BMS. The ±1% SOC control accuracy allows synchronization of the state of charge across multiple batteries connected in series, preventing imbalances that over time degrade the cells. This function — normally handled by the inverter — is available here in standalone mode, without any other active component in the system.
Immediate Start-Up and Bypass Charging
The distinctive feature of the T-BAT-Charger is direct bypass charging: the AC current is converted and sent directly to the battery, without passing through the hybrid inverter logic. This allows immediate start-up even in critical conditions (SOC below the inverter's minimum threshold) and makes the device indispensable for installation technicians during commissioning or service interventions.
Frequently Asked Questions
Is the T-BAT-Charger compatible with all Solax Triple Power batteries?
The T-BAT-Charger is compatible with Solax batteries from the HV (high voltage) series: T-BAT-5.8 V1 and V2, T-BAT-H, and TP-HS50E. The number of batteries that can be managed simultaneously depends on the model: with T-BAT-5.8 V1/V2 with integrated BMS, it is possible to charge 1 battery at a time; with other models in series configuration, up to 2 units can be managed. Always check the installation manual for correct wiring according to the model.
When is it necessary to use the T-BAT-Charger instead of the inverter?
The T-BAT-Charger becomes necessary when the battery drops below the minimum SOC threshold that allows the inverter to start (typically below 5–10%), after a long period of system inactivity, or during maintenance with the battery disconnected from the inverter. It is the standard tool for Solax technicians during commissioning and after-sales support.
Does the T-BAT-Charger work without active photovoltaic production?
Yes. The T-BAT-Charger is powered directly from the AC grid (230 V, 50/60 Hz) and does not require any photovoltaic production. It is specifically designed to operate completely independently from the solar system, making it usable in any weather condition and at any time of day.
How do you update the firmware of the T-BAT-Charger?
The firmware is updated via a USB stick (USB 2.0 or higher). The update file must be requested from the Solax after-sales team. Once the stick is inserted, the device starts the process automatically. It is essential not to turn off the device or remove the stick during the operation to avoid firmware corruption.
Can the T-BAT-Charger be left permanently connected to the system?
The T-BAT-Charger is designed as a service/maintenance tool and not as a permanent component of the system. Proper use involves temporary connection for SOC restoration or commissioning operations, after which it can be disconnected. The IP20 rating (indoor use only) reflects this intended use in technical/professional settings.
