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:What is the difference between a maintenance-free battery and a conventional battery?: As a result of maintenance-free batteries using lead-calcium alloy grille, the amount of water generated when charging less water evaporation, coupled with the shell with a sealed structure, the release of sulfuric acid gas is also very small, so it compared with the traditional battery, With no need to add any liquid, the wiring pile head, wire and body corrosion less anti-overcharge capacity, starting current, power storage time is long, by the car people welcome.

Q:What are the technical parameters of the battery?: Battery capacity is defined as ∫ t0tdt, theoretically t can be infinite, but in fact when the battery discharge is lower than the termination voltage continues to discharge, which may damage the battery, so t value is limited, the battery industry, in hours (h) Battery sustainable discharge time, feel the C24, C20, C10, C8, C3, C1 and other nominal capacity value.

Q:80ah how much battery storage capacity?: 0AH storage is 80AH ah If the actual storage capacity will have to see the brand. I have seen 100AH only 24 pound. This is not even 60AH.

Q:How to determine the battery is good or bad?: If less than 9V but the pointer is in a certain value does not move that the battery is in a state of loss, need to add charge.

Q:What is the meaning of the battery above 12v65Ah?: Voltage 12V, current 65AH, that is the capacity of 65A. (A is the unit of current. H is the time unit)

Q:How to repair the battery?: Charge the battery at constant voltage. It is the beginning of the time, using 0.1C ~ 0.25C current charge, to 16.2V later, by reducing the current method to maintain the charging voltage, until the charge current drops to 0.03C when the stop charging.

Q:What are the hazards of battery over discharge?: The battery discharge to the standard termination voltage when the internal resistance will become larger, the battery electrolyte concentration will become very thin, especially the battery plate micropores and battery plate surface these two points are almost neutral; battery over discharge because of Internal resistance will become larger, so the battery will appear inside the phenomenon of heat, the battery volume will appear fever expansion.

Q:How should the battery be well maintained?: Battery Pile The battery pile head is part of the battery connected to the vehicle. If the corrosion or poor connection occurs, the battery will work poorly. The owner can check whether there is a white powder near the pile head, which is the sign of the pile head corrosion. If the white powder is more, you can use boiling water to burn it off, and then its anti-corrosion treatment, in the pile head smear some grease or preservatives can, but should not be too much to apply, so as not to affect the use.

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:How is the capacity of the battery defined?: 100AH capacity of the battery, fully charged after the 100A current discharge can be an hour to put the power finished. 50A current is 2 hours put away! 20A is 5 hours! Of course this is the theoretical value, in fact it is impossible to have a constant current discharge.

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