For the multi-band handheld wireless lithium battery program, need to meet the miniaturization, long endurance, stable power supply and military-grade resistance to environmental requirements, especially in complex electromagnetic, temperature and humidity, cold or tropical environment must be reliable operation.
I. Usage Scenarios and Design Requirements
Application Scenario: soldier communication, special warfare, urban warfare, emergency communication
Working frequency band VHF/UHF/HF and other multi-band (30MHz ~ 512MHz)
Communication mode Voice, data, encrypted transmission
Continuous power consumption Usually 3~8W (up to 15W for high power transmission)
Standby time ≥24 hours (light communication mode)
Operating time Continuous communication ≥ 6~10 hours (typical)
II. Recommended Battery System Parameters
Battery type High-rate lithium ternary (18650/21700) or high-energy density polymer battery
Nominal voltage 7.4V (2S) or 11.1V (3S)
Nominal capacity 4Ah ~ 8Ah (according to use time)
Energy density ≥200Wh/kg (polymer type is better)
Discharge rate Continuous 2C, pulse discharge ≥5C (to meet the instantaneous power of emission)
Weight limit ≤600g (including case)
Operating temperature -30℃ ~ +60℃ (heating design is required for low temperature)
Shell size Compatible radio body battery compartment (e.g. 148 x 55 x 20mm)
Communication interface SMBus / RS485 (support power query)
Interface type Metal pop pin contact or military specification snap battery base interface
Protection class IP67, waterproof, shock-resistant, salt spray resistant
Military standard compliant Meets GJB 150, GJB 151A, GJB 181A requirements
Third, the electric core selection recommendations
| Cell | Characteristics |
| Riple 18650 (e.g. Samsung 35E) | High energy density for small devices |
| 21700 (e.g. Samsung 50E) | Higher capacity, suitable for long-duration tasks |
| Lithium polymer (soft pack) | High energy density + flexible customized size |
| Ultra-low temperature batteries (optional) | Such as EVE 18650-LT, -40 ℃ can be discharged |
Post time: May-12-2025