Contact Us via FB Messenger
01745 823399
Trustpilot rated Excellent PayPal Accepted ApplePay Accepted
Tayna Batteries

Optima Red Top Battery RTU 4.2 (8004-250) (8004-703) (BCI 78) RTU4.2 AGM

Optima Red Top Battery RTU 4.2  (8004-250) (8004-703)  (BCI 78) RTU4.2 AGM

£ 153.95 inc. VATPrice

£ 7.97 inc. VATStandard Delivery

In Stock

In Stock  In Stock for Express Delivery

Also Add...

Battery Fitting Available

Technical Specification

Customer Rating Customer Rating
4.9 From 55 Reviews
TerminalsPositive Front LeftStandard
RangeOptima Red Top
Voltage12 Volts
Capacity (C20)50 Ah
CCA (EN)815 A
Length254 mm
Width175 mm
Height inc. terms200 mm
Guarantee2 Years
Barcode (EAN)4016987113486

Product Videos

How to fit a car battery video

View AllLatest Customer Reviews

Required a new battery for my American after finding that my old battery is a dud after failing to jump start. Worried at first it would be difficult to source a new battery with the correct terminals and specs during the pandemic, but my worries we're in vain as I found Tayna. Ordered the battery around lunch time and it turned up the following day with enough daylight to try it out! Fit and wired up perfectly and ran without a hitch! Can't say much else other than it's a car battery and it does what it says on the tin, well known brand, solid build. Battery and service both get 5 stars.



Star Rating

Fitted To: Buick Park Avenue V6 3.8L Petrol 1992

Too early to review the battery, but despite all the issues due to Covid 19, the service was excellent. The battery was well packed and was delivered before expected. Thank you.



Star Rating

Fitted To: TVR Cerbera 4.0 Petrol 2000

Perfect fit and also quality battery, looks smart in the engine bay. Replaced the same battery which was fitted around 10 years ago.



Star Rating

Fitted To: Chevrolet Corvette C6 6.0l Petrol 2005

Great battery, highly recommended for a Defender.



Star Rating

Great battery, good price and quick delivery



Star Rating

Fitted To: Chevrolet 3100 Pickup 6.5 Petrol


Model Number

BCI 78

Part Number


Reserve Capacity: 104 minutes

Weight(kg): 17.6

Ask A QuestionQuestions and Answers

There are currently no customer questions, please use the link above to ask your question.