Description features:Specifications:Battery pack: Li-on,4000mahVoltage:14.4vThis product has small volume, large capacity, easy to carry, cooperate with various kinds of power transformer plug, is suitable for inputting the voltage as DC 12 - 16.8 different brand portable notebook computers. It controlled by single chip, charge intelligently.1. Charge voltage dc17.3v, electric current 1.5 a, charge time is about 3.5 hours.2. Output voltage is 11.5-16.8 v, electric current is 4000 mah3. It has low voltage to alarm functions: As the voltage is lower than 13 vs, alarm ring for 10 seconds, it is better to turn off the portable notebook computer in time, when alarm ended. Change the battery, in case data lost.4. Indicate electricity quantity 25% - 50% - 75% - 100%, charge indication(ch)and the saturation instruction( fu). All indicator lamps can be turned on or turn off, accord with the energy-conserving standard.5. Permanent flow( 1.5 a) charge at constant voltages. It transfers to permanent flow( 1.0 a) when battery close to saturation status and it will fill to best saturated condition, lengthen service time.Attention:1. Please note only use hct original charger and accessories, in order to guarantee the normal function and service life.2. No dismantle at will in order to avoid the unexpected injury. Please inform the distributor of our company in time if any accident happened.3. Please don't short negative pole, advise discharger circuit not over 3600ma.4. Avoid keeping in touch with the corrosives material, keep1. Please only use hct original packaging charger and enclosure, in order to guarantee the normal function and service life of the products.2. Asking the affair to be dismantled at will, so as not to cause the unexpected injury. Such as the trouble of finding, please inform the distributor of our company in time.3. The negative pole please don't hold up, propose discharging in the electric current to flow.4. Avoid keeping in touch with the corrosive material, should be far away from the fire source and heat source. Far away from the fire source and heat sourc