1) Prepare work. The sulfuric acid solution electrolyte for pure water and analysis of pure sulfuric acid was prepared by: 500 ml of pure water, 0.5 ml of pure sulfuric acid. Prepare the standard rubber exhaust valve spare. Tools: Screwdriver, straw (can be used instead of disposable needle tube), transparent polyethylene tube, diameter is suitable for suction (needle tube) suction, ABS glue.(2) Pumping the cover of the battery along the exhaust hole. Some batteries are bonded by ABS, and some batteries are buckled. Note that when you open the cover, don't damage the cover. This is a rubber cap that can see 6 exhaust valves.
(3) Open the rubber cap, expose the exhaust hole, and can see the inside of the battery through the exhaust hole. Some battery exhaust valves can be centered, and some fillers are surrounded by some batteries, pay attention to the filler.
(4) The electrolyte is injected with a dropper insertion of the electrolyte by the exhaust hole. The electrolyte is to cover the polar plate 1 mm.
(5) Cover the exhaust hole with the battery of the electrolytic solution to prevent the dust to prevent dust from falling into the exhaust hole, standing for 12-24 hours to sufficiently penetrate the electrolyte. The electrolyte inside the exhaust hole is observed again, and there should be a flowing electrolyte (free acid), otherwise the electrolytic solution should be supplemented.
(6) Take 16.2 volt pressure limit stream charging under the conditions where the exhaust hole is not covered. Preferably, it is best to place the battery in a container resistant container to prevent overflowing electrolytes. At the battery charging current drops to 400 ~ 300 mA, or the voltage reaches 16.2V for more than three hours, it is considered that the battery is charged for the first time.
(7) After the end of the first charging, check whether the surface of the battery polar plate also has an electrolyte. If there is no electrolyte, the electrolytic solution should be supplemented, and the constant pressure limit stream is charged again; if there is an electrolytic solution in 6, with a pipette A absorption of excess electrolyte.
(8) A 14.8V constant voltage limit is used to charge, until the charging current drops to 300 mA.
(9) After cover the exhaust valve, pay attention to the recovery of the filler. Cover the battery cover, if it is glued, it should be adhesive. The heavy object is pressed on the battery cover, and it is completely solidified, and the 4.8V constant voltage limit is charged again, until the charging current drops to 300 mA.
(10) Test the battery capacity again to determine whether the battery capacity is restored. The cause is not ideal for battery maintenance (there is no big capacity, or more than 70% of the nominal capacity) is as follows:
1 The battery is not able to use the repair device to be repaired, and you need to take the first housing refurbishment, repair, and then repair the method to repair the battery repair device.
2, battery vulcanization, can be repaired using a liquid crystal voice new composite ion battery repair device for 12 hours and tested again.
3, 30 minutes after charging, test the battery voltage, still less than 12V, may be the internal disconnection of the battery, but also need to take the first shell refurbishment, repair, and then repair the method.
Article from: http://www.brcpower.com/ Recommend: LiFePO4 Battery Manufacturer Energy storage battery Manufacturer Integrated machine energy storage battery series Manufacturer Lead lithium battery Manufacturer Outdoor Backup Battery Manufacturer Portable outdoor power supply Manufacturer Power battery Manufacturer Powerwall LiFePO4 Battery Manufacturer Battery rack Manufacturers Telecom LiFePO4 Battery Manufacturer Wall mounted battery storage Manufacturer China Lifepo4 Battery
