Nowadays Li-ion batteries are most popular to be used in many indoor and outdoor gadgets, these batteries are preferred due to their high charge storage capacity. such batteries are widely used in today’s portable devices. they are compact, more efficient and have a high energy intensity compared to other types of batteries.

One drawback of such a battery is that we need to continually monitor their charging and discharging process if we do not do this, it badly affects battery life and also reduces the charge storing capacity. If we discharge such battery below a certain voltage range, then the battery cell has a high risk of damage and if we overcharge such battery then it may explode.

To overcome such issues, we can use battery protection and battery charging circuits such as this product. This is a Li-ion single-cell charger/protection circuit that can be used to charge a single cell of 15 Amp capacity or 2500Mah parallel-connected 5 to 6 li-ion cells. In this MOSFET are employed to do the monitoring task which protects our battery cells from overcharge, over-discharge, and short circuits.

Protection :

1. Overcharge protection.
2. over-discharge protection.
3. short circuit protection.
4. overcurrent protection.

Wiring instructions:

1. B+ battery is positive.
2. B- battery negative.
3. P+ outputs the positive input for the battery pack.
4. P- outputs the negative electrode for the battery pack.
5. parallel-connected 5 to 6 li-ion cells

Features :

1. The high-precision voltage sensing circuit
2. The charger terminal uses high-voltage devices.
3. Built-in three-stage overcurrent detection circuit (overcurrent1, overcurrent2, load short circuit);
4. MOS transistors can control battery charge and discharge.

Package Includes :

1 x 1S 18650 3.7V lithium battery protection plate 6 MOS.

8S 29.6v li-ion lipo balancer board balancing board full charge battery balance board.

The balance board is suitable for the li-ion battery pack without balance functions, so as to equalize charge lithium battery charge function, make the battery pack each series charge at the same time.

The balancer is just an Auxiliary function, The balancing means when the battery is charging, each series battery need the same voltage. when ONE cell voltage gets 29.6V, the other cells not, the first cell voltage will discharge to wait for the other cells to rise to the same level.

Note: Battery internal resistance differences within 5 milliohms, the voltage within 0.03 V voltage, capacity vary within 50 ma Cut-off Voltage is according to the BMS setting.

8S Cnnection instruction:

Product Size: 37.3 * 25.8 * 2.4mm

Solder Joint Description:

B – Connect the negative of the battery pack

B1 Connect battery 1 to the contacts in battery 2

B2 Connect battery 2 to the contacts in battery 3

B3 Connect battery 3 to the contacts in battery 4

B4 Connect battery 4 to the contacts in battery 5

B5 Connect battery 5 to the contacts in battery 6

B6 Connect battery 6 to the contacts in battery 7

B7 Connect battery 7 to the contacts in battery 8

Features :

1. Type: Voltage Regulator.
2. Supply Voltage: 29.6v
3. Dissipation Power:18650 Lithium Battery Balanced Function Board.
4. Operating Temperature: Discharge Shunt balanced 4.2V 66mA.
5. Application: 8s Lithium Battery Balanced Function Board.

Package Include:

1 x Lithium Battery Equalizer Board

Features:

1. With Balance.
2. Overcharge protection.
3. PCB color: Blue.
4. Over-discharge protection.
5.  18650 Lithium Battery Equalizer Board.

Specification:

1. Battery types: 18650 Lithium Battery
2. Type: Voltage Regulator.
3. Supply Voltage: 29.4v
4. Dissipation Power:18650 Lithium Battery Balanced Function Board.
5. Application: 8s Lithium Battery Balanced Function Board.
6. No. resistors: 7
7. Values of resistor: 620R

Package Includes:

1 x  7S 25.9V 18650 Lithium Battery Equalizer Board 29.4V.

This protection board is 3s in common use lithium battery protection board (you can adjust for how many strings to be used) Specified chip, stable performance, support disconnection protection, over-current protection, over-discharge protection, overcharge protection, with balance, etc. A common use for “same port” and “different port”, the protection board uses 15 high-power of ultra-low resistance MOS tubes (discharge of 8, charging 7), in the same port mode can support the discharge current 60A, charging current 60A; different port mode discharges current 80A, charging current 60A. Can used for LMO.Ternary lithium battery.LCO(3.7V)battery packs etc.

Features:

1. Temperature protect: Yes
2. Disconnect protect: Yes
3. Shortage protection: Yes
4. Shortage delay: 100-600 uS
5. Shortage protect recovery: YES
6. Charging Current: 60A
7. Current Balance: Yes

Package Includes:

1 x White 4S 100A LiFePO4 Lithium Battery Protection PCB Board

3.7V Lithium Battery Protection Board for Polymer 18650 Bonding Pad (can Spot/Weld) 3A Overcurrent Value. The BMS is used for li-ion battery without balancing function

Features: 

1. High-accuracy voltage detection circuit;
2. The terminal of the charger uses high voltage device;
3. Built-in three-stage over-current detection circuit (over-current 1, over-current 2, load short circuit);
4. MOS transistor can control the battery charge and discharge;

Specification:

1. Over charge voltage: 4.25±0.05V
2. Overcharge release voltage:4.23±0.05V
3. Over-discharge voltage:2.54±0.1V
4. Maximal continuous charging current: 2A
5. Maximal continuous Discharging current: 2A
6. Over-current protection: 3A
7. Size: L40*W4*T3mm
8. Weight: 1g

Package Includes:

1 x 3.7V Lithium Battery Protection Board (1 piece)

This protection board is 5s in common use lithium battery protection board (you can adjust for how many strings to be used) Specified chip, stable performance, support disconnection protection, over-current protection, over-discharge protection, overcharge protection, with balance, etc. A common use for “same port” and “different port”, the protection board uses 15 high-power of ultra-low resistance MOS tubes (discharge of 8, charging 7), in the same port mode can support the discharge current 60A, charging current 60A; different port mode discharges current 80A, charging current 60A. Can used for LMO.Ternary lithium battery.LCO (3.7V)battery packs etc.

Features:

1. Over charge protective current:100A
2. Over discharge protective current:100A
3. Over-discharge protect delay : 0.5-1.5S
4. Temperature protection: Yes, have a Temperature control interface.
5. Disconnect protect: Yes
6. Shortage protect: Yes
7. Shortage delay: 100-600 uS
8. Shortage protects recover mode: Offload release.
9. balance function: yes

Package Includes:

1 x White 5S 100A LiFePO4 Lithium Battery Protection PCB Board