9V lithium battery has only two specifications, two strings of ternary lithium batteries (the most common), fully charged at 8.4V, you need to use two strings of ternary lithium battery chargers ( nominal 7.4 V or full voltage 8.4 V. )
The other is a three-string lithium iron phosphate battery (rare), with a full voltage of 10.95 V and requires a three-string lithium iron charger.
9vusb 1200 mAh rechargeable lithium battery with 5V, how many mAh of charger is qualified?
No. Using a 9V charger to charge a 12V lithium battery will not only charge the lithium battery, but the 12V lithium battery will slowly discharge through the 9V charger output until the voltage be discharged to 9V when the voltage of a single lithium. the battery drops to 3V When recharging, the battery will be damaged and the capacity will not be restored. During the recharge, the battery capacity will become smaller.
Detailed information:
Precautions for using lithium battery charger:< /p> < p>1. Before use, please read the instruction manual and surface markings on the charger carefully.
2. Do not disassemble or modify the charger. It is strictly prohibited to use the charger when the power cord is damaged, otherwise it may cause electric shock, fire and damage to the charger.
3. It is strictly forbidden to touch the charger with wet hands. If the charger comes into contact with water or other liquids, turn off the power supply immediately.
4. It is strictly prohibited to short circuit the charger, it is strictly prohibited to mechanically vibrate or shake the charger, it is strictly prohibited to expose it to direct light from the groundeil and it is strictly prohibited to use it. the charger in high temperature places such as bathrooms. The device is not waterproof and it is strictly forbidden to expose it to rain or humidity.
5. Do not use chargers near televisions, radios and other electrical appliances.
6. Hold the charger when removing the plug. Pulling on the power cord will damage the wire.
Because power is equal to current times voltage. The power of the 9V charger with 1.2A specification is 10.8W. If the 5V wants to reach 10.8W, its specification should be 2.16A, or 2160mA.
But it is definitely not possible to directly replace 9V and 5V. The voltage difference is too large. The 5V voltage value is typically used for charging batteries with voltages lower than 5V, such as 4.2V single cell. ternary lithium batteries. THE9V charger is generally used to charge two strings of 8.4V ternary lithium batteries, or six strings of nickel metal hydride rechargeable batteries, or 6V lead-acid batteries (full voltage 7.3V). To charge high-voltage cells with a low-voltage charger, you must connect an adjustable DC-DC switching power supply in series. For a few yuan you can increase the low voltage to the voltage required for charging.