Today’s Genesis™ NP38-12B battery is the culmination of more than ten decades of battery manufacturing experience. High energy density, leakproof construction, excellent performance in either float or cyclic applications and long service life combine to make the Genesis NP38-12B the most reliable and versatile maintenance-free rechargeable sealed lead acid batteries available.
Technical Specifications
NOMINAL VOLTAGE: 12V
NOMINAL CAPACITY: 20 hr. rate of 1.9A to 10.5V 38.0Ah
10 hr. rate of 3.5A to 10.5V 35.0Ah
5 hr. rate of 6.46A to 10.2V 32.3Ah
1 hr. rate of 22.8A to 9.60V 22.8Ah
WEIGHT (approx.): 30 pounds (13.8 kgs.)
ENERGY DENSITY (20 hr. rate): 1.30 WH/cubic inch (82.8 WH/liter)
SPECIFIC ENERGY (20 hr. rate): 14.9 WH/pound (67.8 WH/kg)
INTERNAL RESISTANCE OF CHARGED BATTERY: 8 milliohms (approx.)
MAXIMUM DISCHARGE CURRENT WITH STANDARD TERMINALS: 150 amperes
MAXIMUM SHORT-DURATION DISCHARGE CURRENT: 500 amperes
OPERATING TEMPERATURE RANGE: CHARGE 50 F to 1220 F (-150 C to 500 C)
DISCHARGE -40 F to 1400 F (-200 C to 600 C)
CHARGE RETENTION (shelf life) at 68˚F (20˚C): 1 month 97%
3 months 91%
6 months 85%
LIFE EXPECTANCY: STANDBY USE 3 to 5 years
CYCLE USE (approx.): 100% depth of discharge 250 cycles
50% depth of discharge 550 cycles
30% depth of discharge 1200 cycles
SEALED CONSTRUCTION: Can be operated in any position without leakage.
STANDARD TERMINAL: Bolt Terminal or Receptacle Terminal with Bolt
HOUSING MATERIAL: Container and cover made from Flame Retardant ABS (UL94-V0/L.O.I.>28%)