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N120 (115F51) 12V120AH JIS SMF Truck Battery

Product Description

Model: N120
BRAVA N120 (115F51, 6-QW-120R-F) JIS series flooded maintenances-free car battery has very good low temperature starting ability,super long shelf life and maintenance free under normal situation.Those batteries are manufactured under JIS technology standard,less electrolyte is consumed,good anti-vibration capacity.It’s good used for car, tractor,mine-truck and the starting,lighting for the construction engineer vehicles,etc.

Voltage : 12v
Capacity : 120Ah
Size : 504*180*208*232mm
Weight : 33.4kg
Terminal : 1


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Physical Specification (mm)

Model N120 (115F51)
Nominal Voltage 12V
Nominal Capacity(20HR) 120Ah
Dimension Length 504±2mm(19.84inches)
Width 180±2mm(7.09inches)
Container Height 208±2mm(8.19inches)
Total Height(with Terminal) 232±2mm(9.13inches)
Weight With Acid Approx 33.4Kg(73.6lbs)
Acid 1.280±0.015g/cm (25ºC)
Standard Terminal 1
Cell layout 4
Hold-Down B0
Case Black-Material (PP)
Cover Black-Material (PP)
Handle Black-Material (PP)

Electrical Specification

Rated Capacity @20 hour rate(1.8A) 120Ah
Reserve Capacity (RC) [email protected] 223min
Cold Cranking Amps(CCA) @0 ºF (-18 ºC) 800A(JIS)

Standard Terminal (mm)

Terminal Type D
Positive Negative
1 19.5 17.9
N120 115F51 layout
N120 115F51 layout
N120 115F51 Discharge Characteristics
N120 115F51 Discharge Characteristics

Wet Starter SMF Truck Battery JIS Standard Series

Type Volt. C20 C5 RC CCA(JIS) Overall Dimensions(mm) Cell Terminal Hold
Handles Wet
(V) (Ah) (Ah) (Min) (-18℃) L W H TH Layout (Kg)
F51 N120 115F51 12 120 96 223 800 504 180 208 232 4 1 B0 TS8 33.4
N120R 115F51R 12 120 96 223 800 504 180 208 232 3 1 B0 TS8 33.4
NS150 145F51 12 135 112 256 850 504 180 208 232 4 1 B0 TS8 34.9
NS150R 145F51R 12 135 112 256 850 504 180 208 232 3 1 B0 TS8 34.9
G51 N150 145G51 12 150 120 290 900 507 219 212 234 4 1 B0 TS8 39.5
NS200 165G51 12 165 136 324 1000 507 219 212 234 4 1 B0 TS8 41.8
H52 N200 190H52 12 200 160 407 1100 515 265 216 240 4 1 B0 TS8 51.3
N200R 190H52R 12 200 160 407 1100 515 265 216 240 3 1 B0 TS8 51.3
N220R 245H52R 12 220 176 456 1200 515 265 216 254 4 4 B0 TS8 53.6


1. How to extend the life of a SMF battery?

In order to increase the life of battery, it is necessary to monitor the battery performance constantly. Here are some tips to optimize the battery performance.
1. The SMF battery should be placed in well ventilated area to avoid high temperature environment. With each 10 degree rise in air temperature, the float life reduces to half. If the battery is installed in equipment, it is necessary to isolate it from heat generating components like transformer.
2. In order to prevent deep discharge, it is necessary to set the cut off voltage to 11.5 volts in 12 volt battery and 4.5 in 6 volt battery.
3. It is necessary to prevent no load battery drain. The additional components of the equipment such as sensors, displays and indicators consume power in the no load condition. So if the equipment is not provided with automatic charging, this power loss leads to deep discharge.

4. Boost cum float charging is suitable for SMF battery. If the power failure is frequent, the battery should be charged immediately to acquire full charge before the next power failure.

5. If there is any problem such as low backup time, battery heating, low terminal voltage even after continuous charging develops, the battery should be attended immediately.

6. If the equipment is not using for long time, it should be charged once in every week. If the battery is allowed to charge and discharge frequently, its life can be extended to 3-5 years.

2. What’s the SMF Battery?

Sealed Maintenance Free batteries are widely used where minimal maintenance and space requirements are the main considerations. In UPS systems, it is used because of its maintenance free and eco friendly features. SMF batteries do not require water and acid top up and are totally maintenance free. There is no water loss during the charge- discharge cycle and the battery works on the oxygen recombination principle. SMF battery is also called as Valve Regulated Lead Acid or VRLA battery.

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