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Availability:: May need to be ordered / Limited stock
Product Code: D35

Model NoOPTIMA D35
DescriptionOptima D35 Yellow Top Battery
Freight Comments
Optima D35 Yellow Top Battery

OPTIMA YELLOWTOP D35 Ultra high-performance SPIRALCELL TECHNOLOGY AGM (absorbent glass mat) dual-purpose deep-cycle and starting battery. OPTIMA YELLOWTOP batteries have three times the cycling capability (rechargeability) with ultimate cranking power for your auto, car or truck to outperform traditional batteries. Perfect for powering heavy electrical loads, including winches, audio systems, inverters, and other demanding vehicle accessories and electronics. Lower internal resistance provides more efficient power output and faster recharges.

The OPTIMA model number for this battery is D35. If you are replacing an OPTIMA battery you already have, this model is the same as batteries marked 8040-218, 9040-218, YEL35, SC35DA, or N9935YEL.

Warranty: 3 years private use, all OPTIMA have their warranty details on the top label and are honoured by the warranty stated on that label.

Battery Model:D35
Part Number:8040-218
NSN:Number applied for, product currently available
UPC Code:8 11405 00093 5

Performance Data

Cold Cranking Amps:620
Cranking Amps:770
Nominal Voltage:12 volts
Open Circuit Voltage (fully charged):13.1 volts
Internal Resistance (fully charged):0.003 ohms
Capacity:48 Ah (C/20)
Reserve Capacity:BCI: 98 minutes (25 amp discharge, 80F (26.7C), to 10.5 volts cut-off)

Physical Characteristics

Plate Design:

High purity lead-tin alloy. Wound cell configuration utilizing proprietary SPIRALCELL TECHNOLOGY.


Sulfuric acid, H2SO4

Case Color:Light Gray
Cover Color:OPTIMA Yellow
Group Size:BCI: 35
Post Type:SAE Post
Weight:16.6 KG
Length:238 mm
Width:171 mm
Height:199 mm


CCA (BCI 0F):620 amps
MCA (BCI 32F):810 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: D35
These batteries are designed for starting and deep cycling applications and for use in vehicles with large accessory loads..

Recommended Charging Information

Alternator:13.65 to 15.0 volts
Battery Charger:13.8 to 15.0 volts; 10 amps maximum; 6-12 hours approximate
Float Charge:13.2 to 13.8 volts; 1 amp maximum (indefinite time at lower voltages)
Rapid Recharge (Constant voltage charger):Maximum voltage 15.6 volts. No current limit as long as battery temperature remains below 125F (51.7C). Charge until current drops below 1 amp.
Cyclic or Series StringApplications::

14.7 volts. No current limit as long as battery temperature remains below 125F (51.7C). When current falls below 1 amp, finish with 2 amp constant current for 1 hour.
All limits must be strictly adhered to.