YellowTop Group D34 Spec Sheet
Battery Model: D34
Part Number: 8012-021
Nominal Voltage: 12 volts
NSN: 6140 01 457 5392
Description: High power, dual purpose engine start and deep
cycle, sealed lead acid battery
Physical Characteristics:
High purity lead-tin alloy. Wound cell configuration utilizing proprietary
SPIRALCELL technology.
Sulfuric acid, H2SO4
Case: Light Gray
Cover: “OPTIMA” Yellow
BCI: 34
Plate Design:
Group Size:
42.9 lb
254.46 mm
173.46 mm
199.21 mm (Height at the top of terminals)
19.5 kg
Terminal Configuration: SAE / BCI automotive.
Performance Data:
Open Circuit Voltage (Fully charged):
Internal Resistance (Fully charged):
Reserve Capacity:
13.1 volts
.0028 ohms
55 Ah (C/20)
BCI: 120 minutes
(25 amp discharge, 80°F (26.7°C), to 10.5 volts cut-off)
CCA (BCI 0°F):
MCA (BCI 32°F):
750 amps
870 amps
Recommended Charging:
The following charging methods are recommended to ensure a long battery life: (Always use a
voltage regulated charger with voltage limits set as described below.)
Model: D34
These batteries are designed for starting and deep cycle applications and for use in vehicles
with large accessory loads.
Recommended Charging Information:
Battery Charger (Constant Voltage):
Float Charge:
Rapid Recharge:
(Constant voltage charger)
Cyclic or Series String Applications:
13.65 to 15.0 volts
13.8 to 15.0 volts; 10 amps maximum; 6-12 hours approximate
13.2 to 13.8 volts; 1 amp maximum; (indefinite time at lower voltages)
Maximum voltage 15.6 volts. No current limit as long as battery
temperature remains below 125°F (51.7°C). Charge until
current drops below 1 amp.
14.7 volts. No current limit as long as battery temperature
remains below 125°F (51.7°C). When current falls below 1 amp,
finish with 2 amp constant current for 1 hour.
All limits must be strictly adhered to.
Recharge Time: (example assuming 100% discharge – 10.5 volts)
Approximate time to 90% charge
100 amps
35 minutes
50 amps
75 minutes
25 amps
140 minutes
Recharge time will vary according to temperature and charger characteristics. When using
Constant Voltage chargers, amperage will taper down as the battery becomes recharged. When
amperage drops below 1 amp, the battery will be close to a full state of charge.
(All charge recommendations assume an average room temperature of 77°F (25°C).
Always wear safety glasses when working with batteries.
Always use a voltage regulated battery charger with limits set to the above ratings. Overcharging
can cause the safety valves to open and battery gases to escape, causing premature end of life.
These gases are flammable! You cannot replace water in sealed batteries that have been
overcharged. Any battery that becomes very hot while charging should be disconnected
Not fully charging a battery can result in poor performance and a reduction in capacity.
Shipping and Transportation Information:
OPTIMA batteries can be shipped by AIR. The battery is nonspillable and is tested according to
ICAO Technical Instructions DOC. 9284-AN/905 to meet the requirements of Packing Instructions
No. 806 and is classified as non-regulated by IATA Special Provision A-48 and A-67 for UN2800.
Terminals must be protected from short circuit.
Manufacturing Location:
Enertec Exports S. de R.L. de C.V.
RFC: EEX020516KU2
Avenida. del Parque No. 2155
Monterrey Technology Park
Cienega de Flores, N.L. 65550
Phone: 52 (81) 81542300
Fax: 52 (81) 81542301
BCI = Battery Council International
OPTIMA Batteries
Product Specifications: Model D34
December 2008
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