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
Technical Specification
Customer Rating |
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5.0 From 2 Reviews |
Terminals | ![]() ![]() |
Brand | Optima |
Range | Optima Yellow Top |
Voltage | 12 Volts |
Technology | AGM |
Capacity (C20) | 48 Ah |
CCA (EN) | 660 A |
Length | 237 mm |
Width | 171 mm |
Height inc. terms | 197 mm |
Guarantee | 1 Year |
Barcode (EAN) | 811405000928 |
Product Videos
View AllLatest Customer Reviews
Excellent Service
5
Julian Wooff - Kendal -

Excellent product, well packed and quick delivery. Would recommend Tayna batteries and would use them again.
5
Jason - Slough -

Description
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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