Residential Battries ESS CFE-640S 12.8V 50Ah 640Wh

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l Volumetric Energy Density increased by 23.5%

l LED power display screen and switch buttons

l Rugged stainless steel body ensures 5 years warranty

l High protection level IP65

l Support 1C charge / discharge and excellent heat dissipation design

l Quick connection and insulation protection

l Stainless steel handles guarantees 3000 fatigue tests

l Supports four external connections in series with voltage

Product Spec
Name	CFE-640S
Model	12.8V50Ah
Nominal Voltage	12.8V
Nominal Capacity @1C	50Ah
Charge Voltage	14.8V
Charge Current Max Continuous	25A
Discharge Current Max Continuous	50A
Discharge Voltage Minimum	10.8V
Pulse Current 5 Sec	75A
Weight	6.7kg±0.5kg
Dimensions LWH（mm）	180140210

Residential Battries ESS CFE-640S 12.8V 50Ah 640Wh

Q: How to determine the battery is good or bad?: Observe the battery electrolyte is turbid, turbidity that the battery positive plate softening. Observe the bottom of the battery whether there is sediment, if the plate off the battery capacity has been inadequate. Hand hit the battery two electrode piles If you hear an empty voice that pole pile and plate break. With a thick wire short-circuit positive and negative pile observation of the battery filling holes, such as the discovery of a bubble appears that the interval has been damaged.

Q: How to deal with waste batteries?: In addition to lead-acid batteries, all kinds of batteries are dissolved in sulfuric acid, and then by means of ion resin from the solution to extract a variety of metals, raw materials obtained in this way than the heat treatment method is pure, so the market price is higher, and the battery contains 95% of the various substances can be extracted.

Q: What are the hazards of battery over discharge?: When the battery discharge current is large, the heat will become more obvious, there will be serious heat generated when the battery deformation, when the concentration of lead sulfate is particularly large, will form a larger crystal particles, that lead to the battery Internal irreversible sulfation.

Q: What battery does the van use?: The battery is mainly composed of tube positive plate, negative plate, electrolyte, separator, battery compartment, battery cover, pole, injection liquid cover and so on. The electrode of the exhaust type battery is made of lead and lead oxide, and the electrolyte is an aqueous solution of sulfuric acid. The main advantage is the voltage stability, the price is cheap; the disadvantage is lower than the energy (that is, per kilogram of battery storage power), short life and routine maintenance frequently. Old ordinary battery life of about 2 years, and the need to regularly check the height of the electrolyte and add distilled water. However, with the development of science and technology, lead-acid battery life becomes longer and maintenance is also more simple.

Q: What are the advantages of maintenance-free batteries?: The advantage of a maintenance-free battery is that the service life is twice as long as the dry battery! And in the use of the process without maintenance! The voltage is also relatively stable.

Q: What is the meaning of the battery above 12v65Ah?: 12V represents the rated voltage. 65Ah indicates that the battery capacity (ie 1 ampere current can be used for 65 hours).

Q: The role of the battery?: Battery is widely used, can be used for ups, electric cars, scooters, cars, wind energy solar systems, security, and so on.

Q: How does the battery increase the voltage?: Chemical energy can be converted into electrical energy device called chemical battery, generally referred to as the battery. After discharge, the internal active material can be regenerated by charging - the electrical energy stored as chemical energy; chemical energy can be converted to electrical energy again when the discharge is required. This type of battery is called a battery (Storage Battery), also known as secondary battery.

Q: What is a maintenanceable battery?: This is relative to a maintenance-free battery. Maintenance of the battery needs to be supplemented with electrolyte to ensure work, while maintenance-free is not required.