4S 40A Li-ion Lithium Battery 18650 Charger PCB BMS Protection Board with Balance For Drill Motor 14.8V 16.8V Lipo Cell Module

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$10.99

Ex Tax: $10.99

Stock: In Stock
Model: EB0047303
SKU: EB0047303

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Number of Strings: 4S

Precise details>>

Precise details:

Feature:

4 string 16.8V 40A lithium battery protection board (comes with recovery function-AUTO Recovery)

Scope: Nominal voltage of 3.6V, 3.7V lithium battery (including 18650,26650, polymer lithium battery)

Product Size: 45 * 55 * 3.4mm (Standard Edition / Enhanced), 46 * 60 * 3.4mm (balanced version)

Product weight: 9.3g (standard / enhanced version), 10.3g (balanced version)

Charging voltage: 16.8V - 18.1V

Continuous discharge current (upper limit): 40A (if the cooling environment is not good, please reduce the load current use)

Continuous charge current (upper limit): 20A

Equalization version: suitable for starting current below 80A, power 135W below the drill.

Project	Min.	Typ.	Max.	Units
Consuming current	12	18	24	uA
Overcharged protection voltage	4.2	4.25	4.3	V
Balanced starting voltage	4.17	4.2	4.23	V
Equilibrium current	95	100	105	mA
Balanced heating power	1.56	1.72	1.91	W
Overcharge recovery voltage	4.1	4.15	4.2	V
Over-discharge protection voltage	2.4	2.5	2.6	V
Overvoltage protection after over-discharge protection	2.8	3	3.2	V
Overvoltage protection after over-discharge protection	3.2	3.5	3.8	V
Over-discharge recovery voltage	2.9	3.2	3.3	V
Conduction internal resistance	2.5	3	3.5	mQ
Overcurrent protection current C	70	80	90	A
Overcurrent delay time	100	150	200	ms
Continuous operating current	0	40	40	A
Continuous output power	0	672	672	W
Ambient temperature	-40	25	85	°C

Troubleshooting:
Fault phenomenon	Fault check and cause	The solution
Unable to charge	Measuring the voltage of 4 groups of batteries. when one of the battery voltages exceeds 4.25V, the protection board will activate overcharge protection.	Pair the battery pack well, do not mix the good battery and the bad battery.
Unable to discharge	Measuring the voltage of 4 groups of batteries. when one of the battery voltages is lower than 2.7V, the protection board will activate the over-discharge protection.	Pair the battery pack well, do not mix the good battery and the bad battery.
Charging/discharging failure	OV, 4.2V, S.4V, 12.6V, 16.8V miswired	Rewire or replace the new board (human failure, no warranty)
Overcharge/overdischarge failure	OV, 4.2V, 8.4V, 12.6V, 16.8V miswired	Rewire or replace the new board (human failure, no warranty)
Discharge protection	Check that the battery pack has sufficient discharge capability and check that the load's starting current exceeds the overcurrent protection current of the protection board.	Replace the battery pack with a higher discharge capacity, or a protective plate with a larger current (super working range)
Component soldering	There is no connection between one of the components and the PCB pad.	Repair welding
Component welding	There is a short circuit between two or more pins of the component.	Remove the component and re-weld
Electrostatic breakdown A	In the unpowered state, measure the G, D, and S poles of the MOSFET. If the forward and reverse resistances of any two pins are 0Q, it indicates that it has broken down.	Remove the replacement MOS tube
Electrostatic breakdown B	Remove the MOS tube and measure the resistance of the G and D, G and S poles of the MOS tube. If there is a resistance indicating that it has broken down, the resistance should be infinite.	Remove the replacement MOS tube

Package includes:

1 x Battery Protection Board

Shipping Time

After you successfully placed an order at RenhotecIC.com, you will receive a confirmation email with your invoice. Once your order is shipped, you will be emailed with the tracking information of your package. Also, you can choose your preferred shipping method during the checkout process. Kindly advise: please select DHL/FedEx if you need our product urgently.

The timeline of the whole shipping process is shown below:

The total delivery time is calculated from the time your order is successfully placed to the time received. Total delivery time is broken down into processing time and shipping time.

Processing time: The time it takes to prepare your item(s), includes preparing your items, performing quality inspections, and packaging for shipment. Normally, the processing time is 1-3 days (Only include Monday to Saturday ) after getting your order.

Shipping time: The time for your item(s) to travel from our warehouse to your destination. The shipping time depends on the shipping method you chose. Please refer to the shipping rate section for details.

Shipping Rates

You could choose the shipping method based on your preference during checkout, different shipping methods will apply different rates and shipping times. Please check the following chart for detail:

Shipping Method Shipping Rates Shipping Times
Flat Shipping (Promotion)
$10 About 5-30 Working Days to Worldwide (Only include Monday to Saturday )
Standard Express（0.5KG starting price listed）
Based On Weights About 5-15 Working Days to Worldwide (Only include Monday to Saturday )
Priority Express （0.5KG starting price listed）
Based On Weights About 3-7 Working Days to Worldwide (Only include Monday to Saturday )

In addition, the transit time depends on where you're located, the shipping method you choose, and where your package comes from. We will keep you informed of any problems here to help you get your order as soon as possible.

If you want to know more information, please contact the customer service by contact form or sales@renhotecic.com. We will settle your problem as soon as possible. Enjoy shopping!

Tags: Battery Protection Board