How to calculate the battery charging time

Car battery charging time is usually for 20 hours.

Take 12 v60ah battery for example, charging mode: charge in the form of constant voltage limiting current, constant voltage 14.8 V, limiting current for 15A, charging hour for 16 hours, then charge constant current for 3A for 4 hours, which the total charging time is 20 hours.

Battery fully charged can be judged according to the following phenomenon, or watch magic eye, full charge state from the magic eye for the green to determine:

1) The storage battery produced a large number of air bubbles, both "boiling" phenomenon;

2) Voltage of up to a maximum and no longer rise in two hours;

3) Electrolyte rose to the highest level, and no longer rise in two hours.

On when the car is not running is try not to put music, air conditioning and other high-power electric appliance, all can make battery serious loss of electricity. When cars run through the generator to the battery supply electricity, but the battery is serious deficient electric need to replenish the electricity, the amount of charge on the car itself completely not enough, can only use a portable charger for battery charging.

Other answer

Car battery charging time is not to maximize the output current calculation, should pass a trickle charging, constant current phase, in the process of charging current size by charger automatic control (intelligent charger).16 hours without full of is normal. In addition to check the battery to see if there is physical damage, broken or the bottom of the liquid level).Long lost electricity to the plate, it is recommended that first find battery lost electricity, or to buy new battery is the same.

12V54Ah

With 14.4 V batteries, the current should be around 5 or 6 Ann.

Charging time should be full of 10 hours.

Have the multi-meter off charging voltage caliber. More than 14 v will try get in the car.

How should 1, electric charge correctly?

Should grasp two main principles: one is shallower frequently charge. The second is not overcharge. Pay attention to the storage battery to ban kui electricity storage, will seriously affect the service life, if the idle time is long, battery damage is more serious. How long is the electric car battery life.

2, why do you want to light put frequently charge?

Lead sulfate are formed when the battery discharge, charging to lead sulfate reduction into sulfuric acid and lead .If the depth of discharge or charge not in time, can't lead sulfate reduction, causes the plate vulcanizing. So, should be ride every day, every day, filling depth of discharge.

3, charging time cannot too long what's the harm?

Charging time is too long to over-consumption of the moisture inside the battery, accelerate vulcanization process of plate, the battery capacity decline gradually, for lack of water until the battery charger drum, scrap.

4, how to grasp the correct charging time?

The correct charging time for; Green light floating again after 1-2 hours, then cut off power supply. Electric car charger didn't overcharge protection function, while the green light, but unable to cut off the power supply, battery actually continues charging, continue to break down the moisture inside the battery, and evaporation. The notion of "full of not filling" is completely does not have scientific reason.

5, what is the main cause of battery short-lived?

Charging and charging time is too long not in time is the main cause of battery short-lived.

1, failure phenomenon

(1) check whether the circuit connection is first contact in good condition, check carefully whether the socket and plug "lighter" burning arc phenomenon, have without break line damage, etc.

(2) check the charger is damaged, the charging parameters conform to requirements: the initial charging current of 1.6-2.5 A/only; Charging voltage up to 14.8-14.9 V/only, charging A convertible floating charge current of 0.3-0.3 / only, float charging voltage is 14.0-14.4 V/only." Electric car charger breakdown maintenance"

Phenomenon of (3) to see if there are any more dry inside the battery, the battery is short of liquid.

(4) should also check the plate presence of sulfide. Plate of irreversible sulfate, can through the QN - $1000 - a preliminary judgment (general discharge detection under 6 v) and then use detector test capacity, discharge time reach regulation capacity of 50% of the general is irreversible sulfate. In addition, when charging, the battery voltage rise so fast, some particularly high single cell voltage, beyond normal many; When discharge voltage drop so fast, don't have any electricity or save electricity few battery. Batteries in appear the above situation, can judge the irreversible sulfate.

2, fault inspection and handling

Each part of the circuit connection is firm, charger abnormal must be replaced. Dry cell battery should be pulse adding water to repair.

Group should be controlled with three battery voltage are above 13.4 V/only as well. If the battery voltage difference between more than 0.3 V, appears in use process because of the sync continue to produce sulfide. So it is important to pay special attention to repair after the battery with a set of questions (especially power battery user) need to be replaced must be replaced!

) 1, buy a car (or replace batteries, battery should have about 80% of electricity, should be charged as soon as I get home, time is a charger light changes after 4 hours advisable, this to three times.

2, after a day ride electric moped, regardless of the 10 to 50 km, all should boost charge, make the battery in a state of "full" for a long time, and on the same day, filling out idle for a few days to refill, easy in the plate, capacity declined. But the charging time not too long, with an hour after the charger light changes advisable. Charging owe some, rather than not to overcharge, otherwise the battery will be charged because of lack of water, bulge, swollen up. Cause damage to the battery cannot remedy.

3, don't let the water into the battery box, to cause the internal battery umc.

4, regularly once a month completely discharge (ride to "under voltage" lit up), the long-distance riding until under voltage lamp shining, battery run out, and then restore the battery capacity, charging makes you understand the battery capacity of the current level, whether to need to be protected by the maintenance, then continuous charging 12 hours.

5, conditional on the monomer in the whole group batteries for, across the warranty battery (especially in summer), each of the three, four months for each battery monomer added 3-4 ml of deionized water (pure water).

6, if they do not have the charger turns green or a charge turned green, be sure to check whether there is something wrong with the charger, or water loss. The electric car charger has a green light or red light solution 】

7, the battery discharge port and charge for the whole mouth to keep clean, prevent contact point from the rust, caused by poor contact overheating and damage.

8, a foot as far as possible starting with the feet, don't be too big load, speed up smoothly. Don't get in to the electric starter.

A set of battery under the condition of proper charging and discharging and normal maintenance, can use more than 5 years. Many users buy a new one after 1-2 years, mainly caused by charging improperly. Therefore, mastering the correct charging method is very important. Remember that the battery is damaged not because improper usage, but improper charging.

The page contains the contents of the machine translation.