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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

£ 7.98 inc. VATStandard Delivery

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Technical Specification

Customer Rating Customer Rating
4.9 From 52 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

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View AllLatest Customer Reviews

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

The advice from the incredibly knowledgeable and patient staff was invaluable. They were trying to just sell you something they took time to make.sure you got exactly what you needed. A.great experience all round from a buyer's point of view



Star Rating

Fitted To: Chevrolet Corvette 5.7 Petrol S

Ordering on line was very easy & it was delivered within 2 days of purchase. I'll use Tayna again for my batteries. Thank you



Star Rating

Fitted To: Dodge Caliber 2lt Diesel 56

Smaller in size than the standard battery makes it easier to fit 2 of these under the seat with a bit of fiddling about, having connections on the front as well as top allows for uncrowded connection of extra leads for cables and Anderson socket in engine bay.



Star Rating

Fitted To: Land Rover Deffender 2.4 Diesel 2008


Model Number

BCI 78

Part Number


Reserve Capacity: 104 minutes

Weight(kg): 17.6

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