Electric lithium battery capacity decline?

First we have to figure out what's wrong with the battery, is worth, of course most of the electric car user of electric vehicle battery or lithium battery is not understand, so usually appear problem, think of the solution is to replace, change new change of second-hand. High cost of lithium-ion battery pack, 80% had high repair value, thus forming a very large repair market, and the market is relatively blank at present. Now stationed in the lithium battery repair, repair electric lithium battery is very interesting and prospects. Battery capacity decline reasons: 1. Cell aging, recession. 2. Different self-discharge, lead to the series of batteries power imbalance, eventually led to the decrease of the lithium battery capacity is not durable. 3. Used in battery and charge and discharge process, there will be a 'cure' phenomenon influence the battery capacity. Battery sulfide is shown as: low voltage battery itself and charging for a while is full, discharge was soon gone. Softening are: battery internal liquid turbidity, black. Battery capacity is reduced, and long after the lead powder drop. 4. Summer and winter quarter charging improperly. The battery voltage and temperature is inversely proportional to contact, so summer high temperature, battery rechargeable battery caused by water loss, cause the battery bulge, deformation. Owe fill travel mileage decline in winter. Electric lithium battery correction method: there are generally two kinds of method, fixed overhaul is battery refurbishment. Break, break, perforated problems such as maintenance of batteries can't use correction is, only through renovation to correction of the battery. 1. The cell aging, there is no way to correction at the end of the life. 2. Lithium battery pack, self-discharge voltage inconsistencies, etc. Then you have to detect the first that is a different voltage of battery, then replace with normal lithium battery capacity, voltage, self-discharge, battery internal resistance and so on consistent battery a reuse. Or use small brother lithium lithium battery voltage differential pressure balance correction device, a key to fix the problem. 3. Sulfide, use 'large current, high voltage equipment in addition to sulfide, this can also see small lithium brother brand instruments, little brother lithium applied for national patent, but now for lithium battery repair students may authorize patent technology, equipment for get it. 4. Summer charge should not be subjected to exposure site, filling or overcharge. In winter, long-term need not when, should time for electric vehicle charging, generally at least once a month.