4S 14.8V 30A Charge Protection Board 18650 Charger Protection Board BMS PCM for li-ion lipo battery cell pack
Description:
The main Li-ion Lithium Battery BMS 4S 14.8V 30A  18650 Charger (lithium-ion   Battery Management System). A charge controller, charge regulator, or battery regulator limits the rate at which electric current is added to or drawn from electric batteries. It prevents overcharging and may protect against overvoltage, which can reduce battery performance or lifespan and may pose a safety risk.
The protection board can be used as a four-component polymer lithium battery pack with a nominal voltage of 14.4V, 14.8V, 16.8V, and four series of 18650 lithium batteries for overcharge and over-discharge, short circuit protection.
Specifications:
- Over-charge detection voltage: 4.28+ 0.05 V
- Over-charging voltage: 4.095-4.195V
- Over-discharge voltage: 2.55±0.08
- Over-charge detection delay time: 0.1s
- Temperature range -30-80
- Short circuit detection delay time: 100ms
- Over-current detection delay time: 500 ms
- Balanced current: 60mA
- Working current: 30A
- Over-current: 60A
- Short circuit protection function: there is, disconnect the load can be self-recovery.
- Size:45x56mm
Main function:
Overcharge protection, over-discharge protection function, short circuit protection
function, over current protection function, band balance.
Package included:
1 x 4S 30A 14.8V Li-ion Lithium 18650 Battery Protection board
electrical parameters: (lithium battery 3.7V) (4 strings)
| details | specification | unit | Remarks | |
| Discharge | Continuous discharge current | 30(MAX) | A | |
| Instantaneous discharge current | 70 | A | ||
| Recharge | Charging voltage | 16.8 | V | |
| recharging current | 30(MAX) | A | ||
| Overcharge protection | Overcharge detection voltage | 4.28±0.05 | V | |
| Overcharge protection delay | 0.1 | S | ||
| Overcharge release voltage | 4.08±0.1 | V | ||
| Power balance
|
Cell balance detection voltage | 4.2±0.025 | V | |
| Cell balance release voltage | 4.2±0.05 | V | ||
| Cell balance current | 60±5 | mA | ||
| Over-discharge protection | Over-discharge detection voltage | 2.55±0.08 | V | |
| Over-discharge detection delay | 0.1 | S | ||
| Over-discharge release voltage | 3.0±0.1 | V | ||
| Overcurrent protection | Overcurrent detection voltage | 150 | mV | |
| Overcurrent detection delay | 9 | mS | ||
| Overcurrent protection current | 75±5 | A | ||
| Overcurrent protection release conditions | Disconnect load | |||
| Short circuit protection | Short circuit protection conditions | External load short circuit | ||
| Short circuit detection delay | 250 | uS | ||
| Short circuit protection release condition | Disconnect negative open | |||
| Temperature protection | Temperature protection |  / | °C | |
| Internal resistance | Main circuit conduction internal resistance | ≤15 | mΩ | |
| Self-consumption | Working current | ≤30 | uA | |
| Sleep current (when the battery is over-discharged) | ≤10 | uA | ||
| Operating temperature | temperature range | -30/+80 | °C |
Package includes:
1XÂ 7.4 V 3A Charger Protection Board
