YB4L-BS(12V4AH)

Dimensions (mm)
Physical Specification
Nominal Voltage12 V
Nominal Capacity (10HR)4AH
DimensionLength113±2mm (4.45 inches)
Width70±2mm (2.76 inches)
Container Height85±2mm (3.35 inches)
Total Height (With Terminal)85±2mm (3.35 inches)
WeightBattery(with acid): Approx 1.5 kg (3.30lbs)
Electrolyte: Approx 0.24kg (0.53lbs)
Sealed and non-spillable AGM battery
Maintenance-free
Powerful 40 cold cranking amps
Electrical Specification
Rated Capacity10 hour rate (0.40 A)
5 hour rate (0.66 A)
2 hour rate (1.40 A)
1 hour rate (2.40 A)
05 hour rate (4.32 A)
4.00AH
3.28AH
2.80AH
2.40AH
2.16AH
Capacity affected by Temperature40°C (104°F)
25°C (77° F)
0° C (32° F)
-15°C (5° F)
106%
100%
86%
65%
Self DischargeApproximately 3% per month (25°C (77°F))
Charging MethodsFull ChargeConstant-Voltage Charge:
Initial charging current: less than 1.2A
Voltage: 14.40 V ~ 15.00 V at 25°C (77°F)
Charging time : 15~18h
Constant - Current Charge:
Charging current: 0.1C10=0.40A, when charging voltage up to 14.40V, continue to charge 4h
Floating ChargeNo limit on Initial charging current
Voltage: 13.50V ~ 13.80 V at 25°C (77°F)

Discharged Characteristics @ 25˚C (77˚F)

Standard Terminal (mm)