Valve regulated MF 12v4ah battery 1.Long service life 2.Use of safety 3.CE,UL 4.Low self-discharge

Valve regulated MF 12v4ah battery

Application

Maintenance free storage battery 12v4ah is used for building interphone, fire alarm system and so on.

battery characteristic
Nominal voltage				12V
Nominal capacity(20h rate)				4Ah
Size		Total height		105mm
		length		90mm
		width		70mm
		height		105mm
Weight				1.25kg
Rated capacity                       25°C(77°F)	20 hour rate(0.20A)			4.0Ah
	10 hour rate(0.4A)			3.2Ah
	5 hour rate(0.70A)			3.0Ah
	1 hour rate(2.5A)			2.7Ah
Internal resistance	in full charge status 25°C(77°F)			35mΩ
Capacity at different temperature(10h)	40°C(104°F)			102%
	25°C(77°F)			100%
	0°C(32°F)			85%
	-15°C(5°F)			65%
Self discharge     25°C(77°F)	capacity after 3 months			91%
	capacity after 6 months			82%
	capacity after 12 months			64%
Mode of charge (constant voltage)       25°C(77°F)	cycle-use		initial charging current less than1.80A ,                    voltage14.10-14.40V
	float-use		Initial charging current less than 0.68A voltage13.5-13.80V

Advantage

The battery is full of power when it’s out of factory, no need to use liquid charge; no memory, no need to discharge battery use, suitable for circuit design; by high partition, adsorption and strong; there is no flowing liquid (poor liquid), does not leak acid and free Upside down, comply with environmental requirements, ease of use, the use of lead-calcium alloys, battery self-discharge is very low, easy storage, less maintenance; using ABS plastic shell and valve technology for safe use.

Notice

Don’t near the hot source and don’t under the sunshine.Don’t charge in the sealed container.No short circuit. It should be addition charge if you don’t use, and single charge per three months, to avoid irreversible sulfating. The battery should be changed when the battery jar broken or the electrolyte omitted, to avoid acid corrosion.Don’t store in the space of acid gas.You should be careful and regular check when use the battery. To avoid the battery don’t work. You should change the battery if the capacity is not full or has been damage, especially after one year using.Don’t put the battery in the fire, or it will explode.Please use cotton cloth to clean, if the battery is broken down and leak electrolyte. Please wash your skin when touch the electrolyte.Don’t clean the battery by using the organic solution. (e.g. petrol)

Valve regulated MF 12v4ah battery