http://www.optimabatteries.com/us/en/support/warranties/on-or-after-2-1-2009/ Amazon may not be an authorized dealer, but many of us sellers of this product are and can provide you with the full manufacturers warranty.

What rv charger converter system is compatible with the Optima? My current wet house battery requires maintenance.

You have to use a "modern" charger that has a "gel battery" selection. I had to buy a new charger to make my gel batteries charge after too much discharge. I think that the gel battery requires a different program that deals with how the charge is taken up in the gel/electrode system rather than the wet electrode system. As I recall, the Optima website has some information on charging gel batteries.

is this a good marine battery

I would say yes. It's all position and sealed. It's amazingly stron and holds a charge extremely well. I used this battery to replace an almost new Toyata battery in a Landcruser. The ca only gets driven once or twice a week. The Toyota battery did not hold a charge well. This yellow top shows me over 1000 cold cranking amps. The Toyota just 500. This is on par with a diesel starting battery.I have a boat with Volvo Diesel engines. I use two 27F marine deep cycle batteries for each other nine. This yellow top could do the job by itself but it's pricey.

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OPTIMA® Batteries High Performance D27F YELLOWTOP® Sealed AGM Battery

Product ID: 6450315

Details

Automotive Fit Type
Vehicle Fit
Battery Cell Composition
Lead Acid
Brand
OPTIMA
Item Highlight
Dual Purpose
Item Weight
54 pounds
OEM Part Number
8037-127

⚡830 Cold Cranking Amps

🔋66 Ah Capacity

🛠️15x Vibration Resistance

S$1228

Duties & taxes included

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Description

⚡ Power that won’t quit—because your ride deserves the best.

BUILT TO LAST 3 X LONGER - Outperforms standard flooded batteries with triple the lifespan and superior durability.
DUAL PURPOSE VERSATILITY - Perfect for both starting and deep-cycle applications in trucks, SUVs, and high-demand vehicles.
FASTER RECHARGE ANYTIME - Advanced SpiralCell technology enables quicker recovery for non-stop performance.
UNSTOPPABLE STARTING POWER - 830 CCA delivers reliable ignition even in the harshest weather conditions.
MAINTENANCE FREE CONVENIENCE - Sealed AGM design means zero upkeep—just install and power up.

The OPTIMA® YELLOWTOP® D27F is a 12-volt sealed AGM battery engineered with SpiralCell technology, delivering 830 cold cranking amps and 66 Ah capacity. It offers 15 times more vibration resistance and up to 3 times longer life than standard flooded batteries, making it ideal for vehicles with high electrical demands. Maintenance-free and spillproof, it supports versatile mounting and faster recharge, ensuring reliable dual-purpose power for starting and deep cycling.

Specifications

ASIN	B004SRTN3Q
Automotive Fit Type	Vehicle Specific Fit
Battery Type	Lead Acid
Best Sellers Rank	#168,956 in Automotive ( See Top 100 in Automotive ) #2 in Automotive Performance Battery Accessories
Brand Name	OPTIMA
Compatible with Vehicle Type	Passenger Car, Truck
Customer Reviews	4.3 4.3 out of 5 stars (198)
Global Trade Identification Number	00811405001697
Included Components	Battery
Item Dimensions D x W x H	6.8"D x 12.2"W x 8.7"H
Item Highlight	Dual Purpose Car, Truck and SUV Battery, 830 CCA, Maintenance Free, Versatile Mounting
Item Type Name	lead_acid_battery
Item Weight	54 pounds
Manufacturer	OPTIMA
Manufacturer Part Number	8037-127
Manufacturer Warranty Description	Parts
Model Number	D27F
Number of Items	1
OEM Equivalent Part Number	8037-127
Terminal	SAE Terminal
UPC	811405001697 721112819846
Voltage	12 volts

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