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Optima Yellow Top Battery YTU3.7 (8042-218) AGM

Optima Yellow Top Battery YTU3.7 (8042-218) AGM

No Longer Available

This item is no longer available from the manufacturer.

Our recommended replacement is below. Optima Red Top Battery RTU 3.7 (8022-255) (BCI 75) RTU3.7 AGM
Optima Red Top Battery RTU 3.7 (8022-255) (BCI 75) RTU3.7 AGM


Technical Specification

Customer Rating Customer Rating
5.0 From 2 Reviews
TerminalsPositive Front LeftSide
RangeOptima Yellow Top
Voltage12 Volts
Capacity (C20)48 Ah
CCA (EN)660 A
Length237 mm
Width171 mm
Height inc. terms197 mm
Guarantee1 Year
Barcode (EAN)811405000928

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Star Rating

Excellent product, well packed and quick delivery. Would recommend Tayna batteries and would use them again.



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YTU3.7 Optima Spiral-Cell Yellow Top AGM Battery

Optima Batteries based in the USA have over 40 years experience in the battery sector. Used extensively across the globe, providing extreme performance and power across a broad range of applications. Using the very latest SpiralCell technology, originally used in the lunar rovers! Optima Batteries benefit from being completely sealed so no maintenance is required, low self-discharge rate for longer shelf life, fast electronic load reserve- ideal for electric winches, auxiliary systems etc-, universal size to fit many many applications from auto, mobility, ups and more, vibration resistance, faster charging times, resistant to extreme temperatures and high cranking power.

AGM Technology (Absorbent Glass Mat)

Compared to flooded batteries AGM batteries are dry celled with the positive and negative plates separated by an absorbent glass mat that holds the electrolyte like a sponge. This minimises electrolyte spillage. OPTIMA AGM batteries use a higher purity of lead compared to other AGM batteries on the market, this extends battery life and increases performance for example; superior starting power, the ability to recharge much faster, higher charge acceptance and shock/vibration resistant. Optima Batteries can be used in a vast range of applications from industrial, agricultural, commercial, marine, auto, ICE, mobility and golf with their easy recognisable colour coded ranges:

Optima Yellow Top

The Yellow Top battery is designed for deep cycle applications such as mobility vehicles or for heavy duty engine starting.

Maintenance Free

1 Year Warranty

Other References: 8042-218

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