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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- Description
- Number of Strings: 4S
Precise details:
4 string 16.8V 40A lithium battery protection board (comes with recovery function-AUTO Recovery)
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 |
1 x Battery Protection Board
- Reviews (29)
- All(29)
- Q & A
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: Where is the origin of Elecbee products? Are they certificated?2023-03-03
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Answer:
Elecbee has long-term cooperation agreements with the OEM factories in China. So that we are able to reduce the intermediate channel cost, and help you save money. Our products are all made strictly according to the relative global standard, to ensure the products have good compatibility and excellent quality.
2023-03-03
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: What forms of payment do you accept?2023-03-03
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Answer:
Our main payment methods include Paypal, Credit Cards, Debit Cards, Bank Transfer, and more to discover. Please choose the payment methods in your favor.
2023-03-03
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: When will you arrange shipment?2023-03-03
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Answer:
After confirming receipt of your payment. We will arrange the delivery as soon as possible and upload the courier number to the website for you to track.
2023-03-03
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: How to exchange or return?2023-03-03
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Answer:
1. You can apply to return within 30 days after receipt of the goods. Please make sure the outside package is intact, and the product is in its original condition. We will arrange your refund according to the relevant provisions once the package is received.
2. Return process: You Apply for a Return - Approve the Return - Arrange a Return - Receive the Products and make Inspection - We arrange a Refund;
3. We will bear the freight charges for returns caused by us, for instance, the quality problem. As to returns caused by the buyer, the buyer should be responsible for the shipping fee.
2023-03-03
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