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Disclaimer:
Lithium Polymer Batteries auctioned/sold here are only approved for experimental RC use, and may not be used in any other application. Battery discharging, charging, electric motors, spinning propellers, and flying models all have the potential for serious injury to persons and damage to property. In bidding/purchasing these products, the user agrees to accept responsibility for all such risks, and not to hold the battery manufacturer, distributors, or retailers - (all including owners and employees) - responsible for any accident, injury to persons, or damage to property.
When used in radio-controlled model aircraft, discharge rates may exceed the manufacturer’s specified maximum rates for these cells. Therefore, the use of these batteries in radio-controlled models is to be considered experimental, and there is no warranty, expressed or implied by the manufacturer, distributors, or retailers with respect to the capacity, life in cycles, storage, or discharge characteristics of Li-Poly cells in RC use, nor any other use nor aspect.
Always monitor your charge.
Li-Polymer cells require a Li-Polymer charger. You MUST use a charger that was specifically designed for that purpose.
Each cell is rated at 3.7V - This is a NOMINAL Voltage
Each cell can be charged up to 4.2V - This is MAX Voltage.
Charging over 4.2V per cell will cause damage to battery, persons or property.
A 2 cell 7.4V battery pack will charge to 8.4V MAX
A 3 cell 11.1V battery pack will charge to 12.6V MAX
Battery packs with cells out of balance (Voltage), arranged incorrectly or severely damaged will cause a FALSE cell count.
ALWAYS inspect & check Voltage of your pack & individual cells (when possible) right before charging. This MUST be done with all Manual/Jumper Chargers as they will do what you tell them.
A fully discharged pack (down to 3V per cell) should read:
2S 6V or higher >>Charge as 2 cell
3S 9V or higher >>Charge as 3 cell
4S 12V or higher >>Charge as 4 cell
If you have a pack that is built in parallel
For Example:
2S2P 7.4V 2400mAh ( built from 4 x 1200 cells ) you ALWAYS charge as a 2 Cell pack, but you can charge it at a higher rate of 2.6 Amps (2.6Ah x 1C = 2.6Amps)
After charging is completed the Voltage may not be Maxed out. This is because some chargers will limit the charge to less than 4.2V per cell.
Your pack may be within these limits:
2S fully charged voltage (8.32V to 8.40V)
3S fully charged voltage(12.48V to 12.60V)
4S fully charged voltage(16.64V to 16.8V)
Discharging.
Our cells are rated by manufacturer to discharge to Maximum of 2.75V per cell under 0.2C load. Discharging to that level at higher rates will shorten the life of the battery or damage it completely as most brushless ESC’s (electronic speed controllers) don’t have an accurate LVC (low voltage cut-off).
A common LVC point is 2.8V–3.0V per cell. This is a SAFE setting for higher discharge rates. Some brushless ESC’s are programmable and can be set up to either point & others are factory pre-set. If you discharge to 2.8V per cell the battery should “rebound” to around 3.15V or more after rest.
Careful when using older brushed ESC’s – They are meant to be used with NiCd and NiMH and the LVC is way below that of a Li-polymer. You can still use them but you have to monitor your run times and watch for power loss.