Optima Red Top Battery RTU 4.2 (8004-250) (8004-703) (BCI 78) RTU4.2 AGM
Technical Specification
| Customer Rating |
4.9 From 81 Reviews |
| Terminals | ![]() ![]() |
| Brand | Optima |
| Range | Optima Red Top |
| Voltage | 12 Volts |
| Technology | AGM |
| Capacity (C20) | 50 Ah |
| CCA (EN) | 815 A |
| Length | 254 mm |
| Width | 175 mm |
| Height inc. terms | 200 mm |
| Guarantee | 2 Years |
| Barcode (EAN) | 4016987113486 |
Product Videos
View AllLatest Customer Reviews
Speedy service, excellent range of products, great website.
5
KP - Chester, United Kingdom -
Fitted To: Dragster Model 'B' fibreglass racing altered 9.5Litre Petrol 1932
Great battery that has good cranking ability for larger engine capacities. Good for application where vibration can be an issue. Side terminals are really handy. Just a bit pricey so 4 stars.
4
AC - Edinburgh, United Kingdom -
Fitted To: Pontiac Firebird 6.6l Petrol 78
Hi Good product, price & service. Are you able to provide invoices when orders are placed please. Regards Malcolm Crabb - Invicta Generators
5
JS - Margate, United Kingdom -
An excellent battery for my 67 Mustang. It has all the cranking amps needed for a V8
5
MS - Manchester , United Kingdom -
Fitted To: Ford Mustang 4.7 Petrol E
Excellent battery, excellent quick delivery.
5
PS - Newbury, United Kingdom -
Fitted To: Chevrolet Corvette 5.7 Petrol 1969
Description
RTU4.2 Optima Spiral-Cell Red 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:
The Red Top battery is an SLI (starting, lights and ignition) battery and is to be used solely for starting applications.
Maintenance Free
1 Year Warranty
Other References: BCI 78, 8004-250, 8004-703
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