Six core maintenance principles for drone lithium batteries
1. Strictly prevent over-discharge and over-charge, and protect voltage safety
Over-discharge protection: When the voltage of a single battery drops below 3.7V, the battery enters a steep drop range, and continuous discharge will cause irreversible damage. When operating, you need to:
Set a 3.8V/battery low-voltage alarm to force return
A single flight consumes ≤80% of the power (retain ≥20%)
Equipped with a spare battery to avoid cycle overdraft
Consequence warning: Frequent over-discharge shortens the life by more than 50%
2. Intelligent charging management to block overcharge risks
Poor quality chargers or aging components may cause voltage out of control, so you must:
Use an intelligent charger with automatic power-off function
Personnel supervision during the entire charging process
Charging current is strictly ≤ the calibrated C number (such as 1C=4A for a 4000mAh battery)
Check the charger output voltage error every quarter (need to be <±0.05V)
3. Scientific storage strategy to delay battery aging
Full-charge storage: no more than 3 days, discharge to 3.8V/cell after expiration
Long-term idle: after more than 3 months, adjust to 3.8V/cell for storage after a complete charge and discharge cycle
Storage environment: placed in a cool and dry place at 10~25℃, humidity <60% and no corrosive gas
Fatal error: full-charge storage for more than 7 days may cause the battery to swell and become scrapped
4. Triple physical protection
Shell protection: avoid falling/squeezing to cause rupture (damage may cause explosion)
Anti-short circuit measures:
Use insulating clamps to isolate positive and negative poles during welding
Use hard explosion-proof boxes for transportation to resist shock
Insulate the interface with silicone insulation sheath
Regular inspection: Check the shell for deformation/corrosion/leakage every month
5. Precise temperature control
Charging and discharging restricted area: Operation is prohibited in an environment of <0℃ or >40℃. The temperature must be restored to 15~25℃ before charging
Low temperature flight specifications (applicable to an environment of <-5℃):
Pre-flight insulation treatment (preheating to ≥10℃)
Flight time is reduced to 50% of normal temperature
Low voltage alarm value is increased by 0.1~0.2V/section (such as 3.7V to 3.8V)
Storage temperature: Long-term storage must be kept constant in a sealed environment of 10~25℃
6. Systematic regular maintenance
Inspection frequency: every 10 cycles or once a month
Required inspection items:
Appearance: bulge/crack/electrolyte leakage
Electrode: metal oxidation/false connection of plug
Wire: insulation damage ≥2mm² needs to be replaced
Abnormal handling: immediately stop using and conduct professional inspection if any problem is found
LYW manufacturer special technical notice
Life formula: standard operation can reach 300 cycles (capacity retention rate>80%), over discharge/full charge storage will be sharply reduced to <100 times
Extreme cold response: -10℃ environmental discharge capacity is only 40% of normal temperature, and the flight time must be reduced by 1:2.5 (such as 20 minutes at normal temperature → 8 minutes in cold area)
Scrap standard: battery expansion>2mm or single cell voltage difference>0.2V requires mandatory retirement
This guide integrates 23 key technical parameters such as voltage threshold, temperature limit, time node, etc., and realizes accurate communication without charts through layered text. All specifications are based on the electrochemical characteristics of lithium batteries, and violation of any clause may lead to the risk of thermal runaway.
