1. Using high quality materials, product quality is guaranteed
2. Universal use for single lithium 4.2V, 2S lithium 8.4V, 3S lithium 12.6V, short connection soldering point to adjust the charging voltage
3. Synchronous rectifier buck DC-DC ultra-high efficiency ultra-low heat
4. Can be converted into a common buck board when no battery is installed
5. High frequency and low internal resistance
6. Integrated high current small volume inductor, fully closed magnetic low loss and low interference, with overheating protection full charge self-stop (indicator light off)
Voltage input: DC4-20V ultra-wide voltage
Sampling resistance voltage: 25mV
Current setting: Current sampling voltage is 0.025V
Charging current = 0.025/sampling resistor resistance (sampling resistor is "R012" on board, resistance value 0.012R, can be purchased and replaced by yourself)
1. Charge 1 lithium battery, such as "4.2V 2800mA" can not reach 2A charging current, only 1.5A at most, such as multiple parallel, capacity increase, in order to reach 2A.
2. When the charging current is greater than 1.5A, it is necessary to install a heat sink to avoid overheating, which may lead to internal overheating protection or burn the charging board, and the common indicator light will flash slowly.
3. The board is charged at constant current, if the battery is discharged, the current can reach 2A when charging, and the charging current will be reduced accordingly when the battery voltage is back up.
4. When adjusting the charging voltage, the charging board should not be loaded with batteries and input power, otherwise the board will be damaged.
5. Please do not touch any part of the board with your hands while the charging board is working, otherwise the human body static electricity will damage the chip.
6. The smaller the difference in voltage between the input power supply and the lithium battery, the greater the charging current, such as power supply 4.8V 3A, and a single lithium battery 4.2V full charge voltage, a difference of 0.6V, the charging current will be slightly larger than with 5V power supply. However, the charging power supply must meet the condition that the voltage difference with the battery full charge voltage is not less than 0.3V when carrying a load.
1. LED indicator flashing fast: no battery access, battery or protection board failure
2. LED indicator slow flashing: charging board overheating protection; input power protection; lithium battery protection state may be triggered
Li-ion battery charging board*1
1.We accept PayPal payment ONLY, and must be received within 5 days from the date of purchase.
2. It is easy and safe for you to pay by credit cards, debit cards, bank transfers and PayPal account balances. 3.Buyers are responsible for import duties,custom fees and taxes, if any, please check your country.
2. If you do not satisfy with our items. Please simply return to us within 30 Days in original condition. Just pay for the returned postage. Then we can issue full refund or resend the item to you after the returned item arrived at our warehouse.
3. Please include your eBay ID and item number with any email requests.
1.We only ship to the confirmed address provided by eBay. please make sure your ebay address is 100% matches the address you would like us to ship to. If not, please let us know before we sent you the package, or we will not be responsible for any loss. hope you could understand.
2.Orders will be processed instantly and dispatched within 1-2 business days except hoilday, so we do NOT accept any email/message note after you place orders.
3.All package need to wait 30 days,Please take care it.Less than 30 days,we can't take a refund.
1.We greatly appreciate your POSITIVE feedback. Please do NOT leave negative feedback without asking for help.
2.Please DON'T leave negative or neutral feedback if you haven't received item in 30 days, because we have mentioned the shipping time repeatedly
2.Just contact us using the " Ask the seller a question" link on eBay.
3.Our aim is to provide Top Level Customer Service, normally so we will try our best to solve any problem.