18650 BMS 4s 40A 16V
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Shipping
We are an online wholesale platform and shipping costs are charged separately for greater benefit to you.
Air freight costs are based on the weight of the product (including packaging bags and cushioning materials). For products under 2kg, freight is calculated in 50g increments. For products between 2kg and 4kg, freight is calculated in 100g increments. For products over 4kg, freight is calculated in 1kg increments.
If your order exceeds 4kg or the shipping cost exceeds $70, we recommend contacting our customer service for an accurate shipping quote. You will need to provide your zip code address when you contact us.
Air freight options include DHL, UPS, FedEx, and Yun Express, with a delivery time of 7-12 days.
When the weight of the express delivery exceeds 12kg or air shipping cost exceeds US$100 or sea shipping cost exceeds US$50, you can choose B2B shipping:
Air freight(10-14 days)
Yun quik boat sea freight (15-20 days)
Quik boat sea freight(20-25 days).
Air freight B2B express |
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| US Area | Unit Price | Date | Last-mile Delivery |
| Western United States (zip codes starting with 8 or 9) |
US$7.5/kg + US$2 | 10-15 days | UPS / FEDEX / GOFO |
| Central United States (zip codes starting with 4, 5, 6, or 7) |
US$8.5/kg + US$2 | ||
| Eastern United States (zip codes starting with 0, 1, 2, or 3) |
US$9.0/kg + US$2 | ||
Yun quit boat sea freight B2B express |
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| US Area | Unit Price | Date | Last-mile Delivery |
| Western United States (zip codes starting with 8 or 9) |
US$3.4/kg + US$2 | 15-20 days | UPS / FEDEX / GOFO |
| Central United States (zip codes starting with 4, 5, 6, or 7) |
US$3.6/kg + US$2 | ||
| Eastern United States (zip codes starting with 0, 1, 2, or 3) |
US$3.8/kg + US$2 | ||
Quit boat sea freight B2B express |
|||
| US Area | Unit Price | Date | Last-mile Delivery |
| Western United States (zip codes starting with 8 or 9) |
US$2.6/kg + US$2 | 20-25 days | UPS / FEDEX / GOFO |
| Central United States (zip codes starting with 4, 5, 6, or 7) |
US$2.8/kg + US$2 | ||
| Eastern United States (zip codes starting with 0, 1, 2, or 3) |
US$3.0/kg + US$2 | ||
Processing starts after your payment confirmed. Normally, it needs 2-5 days. The processing time depends on the quantity of items.
Charging Voltage: DC 16.8V~17.8V
Continuous Discharge Current: Maximum 40A (If the heat dissipation environment is poor, please reduce the load current)
Continuous Charging Current: Maximum 20A
Product Dimensions: 45*60*4mm
Applicable Type: Suitable for lithium batteries with a nominal voltage of 3.7V and a fully charged voltage of 4.2V (including 18650, 26650, and polymer lithium batteries). Can power drills up to 170W.
Precautions:
1. Successfully starting the drill requires four 15C-20C power batteries or eight 10C-15C power batteries. Use copper wire of 3 square millimeters or larger for the 0V and 14.4V connection. A standard 18650 cannot start a power drill!
2. Strictly follow the wiring diagram for 0V, 4.2V, 8.4V, 12.6V, and 16.8V. Do not touch any components on the board when soldering wires, and do not intentionally short-circuit.
3. When soldering batteries for the first time or during charging, the "430" resistor will heat up and discharge if a single battery exceeds 4.2V (it will stop heating when it discharges to around 3.59V). If the "430" resistor gets extremely hot (to the point where you can't touch it), please check if the wiring is incorrect or if you are using the wrong 4.2V battery.