Introduction: This article introduces how to choose FPV batteries, and also gives you some popular science about the correct use of FPV batteries and how to deal with scrapped FPV batteries
Do you often find that you don’t know how to choose FPV batteries? Do you know nothing about how to use FPV correctly? Do you not know how to deal with scrapped FPV batteries? Today, I will show you how to choose FPV batteries. At the same time, I will also tell you some about the correct use of FPV batteries and how to deal with scrapped batteries, and finally recommend an FPV battery manufacturer to FPV manufacturers.
FPV battery core selection factors
Label compliance
Must include: product name, quality, standard number, manufacturer information, quality inspection certificate, Chinese warning
Key parameter identification:
Series-parallel structure (such as 4S = 4 cells in series)
Single cell voltage range (2.75~4.2V)
Capacity marking benchmark (4.2V discharged to 2.75V power)
Cell performance matching
Conventional battery: working voltage 3.0~4.2V
High voltage battery (HV): support 4.35V full charge (need to be clearly marked)
Nine iron rules for safe use of FPV batteries
Voltage restricted area
Absolutely prohibited <2.75V (over-discharge) or >4.2V (overcharge)
HV battery limit value: discharge ≥3.0V, charge ≤4.35V
Charging specification
Parameter Standard value Danger threshold
Charging current ≤1C (conventional) >5C causes thermal runaway
Charging voltage 4.20V/cell (±0.05V) ≥4.25V flatulence
Ambient temperature 5~40℃ ＜0℃ or ＞45℃
Discharge control
Continuous current ≤ calibrated value (such as 100C battery ≤ 100 times capacity current)
Cut-off voltage ≥3.0V/cell
Working temperature -10~60℃
Anti-reverse connection mechanism
The charger must have polarity detection function
Reverse charging will directly damage the battery
Battery scrapping judgment and processing
Scrap standard
Appearance: bulge ＞3mm/leakage/shell rupture
Voltage: single cell ＜2.75V or ＞4.27V (conventional)/＞4.37V (HV)
Performance:
Internal resistance ＞initial value 200%
Capacity ＜nominal value 70% (two consecutive tests)
Professional processing flow
Salt water discharge method
Ratio: 1 part salt + 20 parts of water (in a wide-mouth iron bucket)
Operation:
Immerse the battery in an open space outdoors for more than 2 hours
Treat ≤ 3 groups at a time
Confirm: no voltage/no heat, then treat as solid waste
Manufacturer recycling
Contact the brand (LYW) for professional degradation
High-frequency question explanation
4S battery meaning: 4 cells in series (nominal voltage 14.8V)
Over-discharge crystallization risk: When the voltage is less than 2.75V, electrolyte crystallization may pierce the diaphragm and cause a short circuit
3C charging interpretation: 3 times the capacity current is allowed (such as 1500mAh battery with 4.5A charging)
Example: 1300mAh 4S 100C battery
Charging: maximum current 4A (≈3C)
Discharging: instantaneous current 130A (100C)
Storage voltage: 14.8V (3.7V/cell)
Following this guide can extend the battery life to 200+ cycles. Violation of regulations may result in scrapping after a single flight. All technical parameters are based on lithium electrochemical characteristics. If the deviation is ±5%, it is necessary to stop the vehicle for testing.
