18650 BMS 2s 20A 8V
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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 |
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| 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.
2-Series 8.4V 20A Lithium Battery Protection Board Application Scope: 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; no size restrictions). Product Dimensions: 45*15*3.4mm (Standard Version) Product Weight: 2.9g (Standard Version) Charging Voltage: 8.4V-9.0V Continuous Discharge Current (Maximum): 20A (If the heat dissipation environment is poor, please reduce the load current) Continuous Charging Current (Maximum): 10A Standard Version: Suitable for electric drills with a starting current below 25A and a power below 50W, or resistive loads with a power below 168W.
Precautions 1: Successfully starting an electric drill requires two 10C-20C power batteries, or four 5C-10C power batteries (ordinary 18650 batteries cannot start an electric drill!!!); the 0V and 8.4V connection wires should use copper wire of 2 square millimeters or larger (nickel sheets cannot be used!!!). Note 2: Strictly follow the wiring diagram for 0V, 4.2V, and 8.4V. The battery needs to be charged before it outputs power.
Note 3: When charging the battery, it's normal for the "430" resistor to heat up, indicating the equalization circuit is working. If the "430" resistor heats up when not charging, please check for incorrect wiring.
For customers with limited electronics knowledge: Never mix good and bad batteries! The closer the capacity/internal resistance of the two sets of batteries, the better! (The effect of using one good battery + one bad battery = the effect of using two bad batteries).