Gens ACE G-Tech Smart Li-Pol Battery 7.4V / 300 mAh, 35C (JST) – HPA

Gens ACE Li-Po battery 7.4V – 300 mAh (35C) with a JST connector and G-Tech Smart automatic charging in an HPA micro configuration is a compact airsoft battery for HPA Engine such as PolarStar or GATE Pulsar. It offers stable performance and safe operation. Compact dimensions of 42 × 16 × 12 mm fits inside the HPA pistol grips

How to charge a Li-Po battery with a G-Tech Smart connector

A Li-Po battery with a G-Tech Smart Connector can be charged in two ways. With a compatible G-Tech Smart charger, the battery parameters are recognised automatically. When using a conventional universal Li-Po charger, the correct battery type, number of cells and charging current must be set manually.

A) Charging with a G-Tech Smart charger (e.g. iMars mini / D300)

A G-Tech Smart charger automatically recognises the battery parameters using the integrated chip. There is therefore no need to manually set the battery type, number of cells or charging current.

1. Connect the main power connector: Connect the battery's black connector (JST-SYP) to the corresponding charger port. If necessary, use a compatible adapter supplied with the charger.
2. Connect the G-Tech Smart balance connector: Plug the black balance connector into the designated G-Tech port on the charger. The connector can only be inserted correctly in one orientation.
3. Wait for automatic detection: The charger reads the information stored in the battery chip and displays its parameters, such as LiPo, 2S, 300 mAh.
4. Start charging: The charger automatically sets the appropriate charging parameters. For a 300 mAh battery, a current of 0.3 A is typically used. Depending on the charger type, confirm the start of charging or the process may start automatically.
5. Wait for charging to finish: The charger indicates a full charge with an audible signal, indicator light or Full / Charge Done message. Then disconnect the battery.

B) Charging with a conventional universal Li-Po charger (e.g. SkyRC iMax B6)

A conventional Li-Po charger cannot read data from the G-Tech Smart chip. You must therefore set the battery parameters manually and carefully check them before charging.

1. Connect the battery: Connect the main power connector (JST-SYP) to the charger output using a suitable charging cable. Connect the G-Tech balance connector to the 3-pin 2S balance port directly on the charger or balance board.
2. Select the battery type: Select the LiPo BATT program in the charger menu.
3. Select balance charging: Set the LiPo BALANCE mode, which balances the voltage of the individual cells during charging.
4. Set the charging current: For a battery with a capacity of 300 mAh, set the current to 0.3 A, corresponding to a 1C charge rate. The stated maximum charging current is 0.6 A.
5. Set the number of cells: For a 2-cell battery, set 7.4V (2S).
6. Start charging: Hold the ENTER / START button for approximately 3 seconds.
7. Check cell detection: The charger will check the battery. Before confirming, verify that the detected number of cells matches the selected value, for example R: 2SER / S: 2SER. Only then confirm charging.
8. Wait for charging to finish: A fully charged 2S Li-Po battery reaches a total voltage of 8.40 V, i.e. a maximum of 4.20 V per cell. Once charging is complete and the charger indicates completion, disconnect the battery.

Warning: Before charging, always check the correct battery type, number of cells, connector polarity and selected charging current. Never charge a Li-Po battery unattended and always use a charger designed for Li-Po batteries.

Technical specifications

• Configuration: HPA micro
• Type: Li-Po
• Voltage: 7.4 V
• Capacity: 300 mAh
• Discharge rate: 35C
• Dimensions: 42 × 16 × 12 mm
• Weight: 19 g
• Cable length: 65 mm (G-Tech Smart) / 100 mm (JST)
• Connector: JST
• Balance connector: G-Tech Smart
• G-Tech Smart charging: Yes
• Can be charged with standard Li-Po chargers: Yes (the G-Tech Smart balance connector is connected like a standard balance connector)
• Designed for: HPA guns with an HPA Engine JST connector (PolarStar, GATE Pulsar and others)

Maintenance, charging and storage instructions

• Fully charge the battery at a lower current before first use.
• Only charge using a charger designed for Li-Po batteries.
• Ideally, use a protective charging bag.
• Do not leave the battery completely discharged – this may damage it.
• For long-term storage, keep the capacity at around 70–75%.
• Store in a dry place away from direct sunlight and high temperatures.
• A drop in rate of fire or trigger response is a signal that the battery needs recharging.
• You can find a detailed manual for G-Tech Smart batteries in the Download section.

Package contents

• Gens ACE G-Tech Smart Li-Po battery 7.4V / 300 mAh (35C)