Optima D34M

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$329.99

The OPTIMA BLUETOP® high-performance Absorbed Glass Mat (AGM) battery provides more recharges and longer deep-cycle run time than you get out of traditional batteries. They are designed to handle the constant vibration and jarring from waves that destroy traditional marine batteries. OPTIMA's patented SPIRALCELL™ Technology offers 15 times more vibration resistance and twice the life of an ordinary lead acid battery. In addition OPTIMA BLUETOP® provides more power in the initial seconds of the starting process than comparably rated conventional lead-acid batteries.

Both dual-purpose and starting applications available
Up to 3x more recharges than other marine batteries
More than 15 times the vibration resistance
Spill-proof
Mountable in virtually any position
Maintenance-free
Optimal starting power (dual purpose and starting applications available)
Works well as a boat battery or RV battery

Click here to Download Optima User Guide PDF.

Specifications
Warranty

COLD CRANKING AMPS
Volts	12v
Length in. (mm)	10" (245mm)
Width in. (mm)	6.88" (168mm)
Height in. (mm)	7.81" (191mm)
Weight lbs (kg)	43.5 lbs (20 kg)
Rated Capacity @ 20 Hr Rate	55Ah
32°F	870 Amps
0°F	750 Amps
MINUTES OF DISCHARGE
25 Amp Load	120 Minutes

OPTIMA Redtop Warranty

6v and 12v Passenger Vehicle/Light Truck (Non Commercial)
36 Months Free Replacement

Commercial Vehicle
12 Months Free Replacement

Deep Cycle Applications / Car Audio
Not Covered

OPTIMA Yellowtop Warranty

12v Passenger Vehicle / Light Truck (Non-Commercial)
36 Months Free Replacement

D31A and D31T
24 Months Free Replacement

Commercial Applications (Except D31A and D31T)
12 Months Free Replacement

Series String Applications with Approved Battery Management System
12 Months Free Replacement

Series String Applications without Approved Battery Management System
1 Month Free Replacement

OPTIMA Bluetop Warranty

Consumer Applications
24 Months Free Replacement

Consumer Applications
12 Months Free Replacement

Series String Applications with Approved Battery Management System
12 Months Free Replacement

Series String Applications without Approved Battery Management System
1 Month Free Replacement

Use of 34M in Deep Cycle / Car Audio
Not Covered

A battery warranty is for manufacture defects in material and/or workmanship. Warranty does not apply to batteries that are severely discharged, have broken containers, covers, or terminals, have been overcharged or sulphated, or have been neglected or abused or are used in applications for which the battery is not designed.

The warranty covers the defective battery only. BatteryGuys.com is not responsible for any freight charges, installation charges, loss of time, or other consequential damage or cost incurred.

The warranty does not apply to batteries if their proprietary manufacturing code markings and/or serial numbers have been tampered with or removed.

If you feel you have a received a defective battery, please email us at support@batteryguys.com for instructions on how to proceed.

Customer Reviews

5.0 Based on 7 Reviews

5 ★

100%

4 ★

3 ★

2 ★

1 ★

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04/21/2025

Jeffrey P.

United States

Optima D34M Purchase

Bought 2 D34M Optima batteries for my RV. So far, so good! Battery Guys got the order processed and shipped quickly. Will definitely keep them at the top of my list for batteries..

05/20/2024

Larry N.

United States

best battery

great price and fast shipping

07/03/2023

Dennis G.

United States

Great service

Service and shipping was fast and item was just what we ordered

05/02/2023

Elaine S.

United States

Multiple batteries

Excellent speed and quality. Love the product!

04/28/2022

Zac C.

United States

Great experience and great battery

It's an Optima Battery. Not much to say. The only battery i run in my boat. Bought two of them from Battery Guys. Shipped fast and packaged well. Thanks!