Product overview
The RadioLink CM210 is a portable balance charger for 2S lithium batteries used with small racing drones, small fixed-wing aircraft and radio-controlled cars. Its body measures 40.5 × 21 × 15 mm and weighs 5 g, keeping its space and weight requirements modest among field accessories. It combines series charging with bypass balancing and maintains dynamic balancing throughout charging. USB Type-C accepts 5 V DC input from an adapter, computer, power bank or vehicle charger, with charging current adapting to the supply's capability.
The supplied package contains one CM210 charger, one Type-C charging cable and one packaging bag. Maximum pulse charging current is 1.5 A. A 600 mAh 2S lithium battery can reach full charge within 20 minutes under laboratory test conditions, with actual charging time dependent on the power source's maximum current. Charging accuracy is 0.02 V and efficiency exceeds 82%. Battery-level LEDs show charging progress, while low-voltage precharge activates trickle recovery when an individual cell falls below 3.0 V.
As the battery approaches full charge at 4.16 V, the CM210 switches to trickle top-up mode and adjusts charging to 1C. Circuit or battery faults stop charging and trigger an LED alarm; an extended absence of current stops charging and flashes the red LED. Supply protection sets a preset current when supply voltage is pulled down to 3.7 V. Above a board temperature of 75°C, charging current falls to two-thirds of its preset value; below 70°C, charging resumes at the preset current.
Specifications
| Specification | Value & conditions |
|---|---|
| Product identity and purpose | RadioLink CM210 miniature balance charger. |
| Battery type | 2S lithium batteries. |
| Input | USB Type-C, 5V DC. |
| Adaptive charging current | Automatically adjusts charging current to avoid overloading the power supply.According to the connected power supply's capability. |
| Power source options | Adapters, computers, power banks and vehicle chargers. |
| Dimensions | 40.5 × 21 × 15 mm. |
| Weight | 5 g. |
| Charging architecture | Series charging with bypass balancing. |
| Maximum pulse charging current | 1.5 A maximum. |
| Balancing operation | Dynamic balancing throughout the charging process.Throughout charging. |
| Charging time | Full charge within 20 minutes.600 mAh 2S lithium battery; laboratory test; actual time depends on the power source's maximum current. |
| Low-voltage precharge | Activates trickle recovery.A cell voltage below 3.0 V. |
| Near-full charging adjustment | Automatically switches to trickle top-up mode and adjusts charging to 1C.Battery approaching full charge at 4.16 V. |
| Fault response | Automatically stops charging and provides an LED alarm.Circuit or battery fault. |
| No-current alarm | Stops charging and flashes the red LED.No current detected for an extended period. |
| Power supply protection | Sets the current to a preset current.Supply voltage pulled down to 3.7 V. |
| Thermal current reduction | Reduces charging current to two-thirds of the preset current.Board temperature greater than 75°C. |
| Thermal current restoration | Restores charging at the preset current.Board temperature below 70°C. |
| Charging accuracy | 0.02 V. |
| Charging efficiency | Greater than 82%. |
| Charge indication | Battery-level LEDs provide real-time charging progress. |
| Included equipment | One CM210 2S lithium battery balance charger, one Type-C charging cable and one packaging bag.Supplied package. |
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