4S 40A Li-ion Lithium Battery 18650 Charger PCB BMS Protection Board with Balance For Drill Motor 14.8V 16.8V Lipo Cell Module
160
Direct purchase from the factory 
Ua palekana ka uku
Makana manuahi
Kuleana hoʻouna
Kuleana hoʻihoʻiMakana Manuahi
Aloha mai i Roymall, kāu pūnaewele kūʻai makana maikaʻi. Mahalo nui mākou i kāu kākoʻo, a hāʻawi mākou i makana manuahi me kēlā me kēia kūʻai. Mākaukau e ʻimi i kā mākou hōʻiliʻili? E nānā i kā mākou koho, kau i kāu kauoha, a e kali no kāu makana manuahi me kāu kūʻai.Kuleana Hoʻouna
Hoʻoponopono mākou i nā kauoha i loko o 2 lā.ʻO ka manawa hoʻouna maʻamau he 5-7 lā hana.Hiki ke ʻokoʻa ka manawa hoʻouna ma muli o ke kahua.1. Kuleana Hoʻihoʻi
ʻAe mākou i nā mea i kūʻai ʻia mai roymall.com wale nō. ʻAʻole hiki ke hoʻihoʻi i nā makana manuahi. Pono e hoʻohana ʻole ʻia ka mea a i ʻole i loko o ka pūʻolo kumu.Hoʻoponopono mākou i nā hoʻihoʻi i loko o 3-5 lā hana ma hope o ka loaʻa.ʻAʻole hiki ke hoʻihoʻi i nā mea i hoʻohui ʻia.E kelepona iā mākou: service@roymall.com a i ʻole Whatsapp: +86193598494712.Kuleana Uku
E loaʻa iā ʻoe ka uku piha ma hope o ka loaʻa a me ka nānā ʻana. ʻAʻole hiki ke hoʻihoʻi i nā uku hoʻouna.E kelepona iā mākou: service@roymall.com a i ʻole Whatsapp: +8619359849471
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 | mu03a9 |
| 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 | u00b0C |
| 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 | 0V, 4.2V, 8.4V, 12.6V, 16.8V miswired | Rewire or replace the new board (human failure, no warranty) |
| Overcharge/over-discharge failure | 0V, 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 over-current 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 0u03a9, 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
1 x Battery Protection Board
