3.6V 2600mAh 18650 Li-ion cell for solar application
Specification of 3.6V 2600mAh
0.2C,( current value of 2600mA at 1C）
Alternating Internal Resistance
constant-current charge to 4.2V at 0.3C,constant voltage charge to stop until 0.01C mA
Max. Charging Current
Discharge Cut-off Voltage
Standard Discharge Current
Fast Discharge Current
Max. Continuous Discharge Current
Pulse Discharge Current
the residual capacity is no less than 70% of rated capacity at 0.5C rate.
-20°C ~ 45°C
Short-term storage (< 3 months)
When should I start charging during normal use?
This can often be seen because the number of charge and discharge cycles is limited, so the battery power of the mobile phone should be recharged as much as possible. In fact, the life of the lithium battery has nothing to do with this. An experimental table on the charge and discharge cycle of a lithium ion battery can be exemplified below. The data on the cycle life are listed below:
Cycle life (50% DOD): >1000 times
Cycle life (100% DOD): >500 times
Among them, DOD is the abbreviation of depth of discharge. As can be seen from the table, the number of chargeables is related to the depth of discharge, and the cycle life at 10% DOD is much longer than that of 100% DOD. Of course, if you convert to the relative total capacity of the actual charge: 10% * 1000 = 100, 100% * 200 = 200, the latter's full charge and discharge is still better, but the former netizen's statement to do some correction: in normal In this case, you should reserve the charge according to the principle that the remaining battery power is used up and recharge, but if your battery is not likely to stick to the whole day on the 2nd day, you should start charging in time. Of course, if you are willing to carry it back It’s a different matter to get the charger to the office.
The principle of recharging the remaining battery power is not to go to extremes. One of the more widely spread arguments like long charging is to "try to run out of battery power." This practice is actually only a practice on nickel batteries, the purpose is to avoid memory effects, unfortunately it has also been circulating on lithium batteries. Someone has used the example of automatic shutdown since the warning of the low battery level of the mobile phone is still not used. As a result, the mobile phone in this example did not respond during the subsequent charging and booting, and had to be sent to the customer service for repair. This is actually caused by the battery being over-discharged and the voltage is too low, so that it does not have normal charging and power-on conditions.
Do not charge the mobile phone lithium-ion battery too much and do not use it. If the battery is not used up, it will be charged. It will not cause damage to the battery. It should be charged within 2-3 hours, not necessarily full. However, the lithium battery should be fully charged (normal charging time) and discharged after 1 to 2 times every 3 to 4 months.
Lithium batteries that have not been used for a long time should be stored in a cool and dry place, in a semi-electric state (70--80% of full power, if your mobile phone displays 4 grids when fully charged, then 3 grids can be best). The storage of full power is dangerous and the battery will be damaged. If the battery is stored without electricity, it will be destroyed. Check every three to six months to see if you want to recharge.
Lithium-ion batteries can be divided into liquid lithium-ion batteries and polymer lithium-ion batteries according to the electrolyte. The electrolyte of the polymer lithium-ion battery is a colloid and does not flow, so there is no leakage problem and it is safer.