Battery Atlas

Dual purpose · AGM

OPTIMA BLUETOP BT DC 4,2

Manufacturer part number 816 253 000 888 2. Specifications as published by OPTIMA.

Documented

What are the specifications of the OPTIMA 816 253 000 888 2?

The OPTIMA BLUETOP BT DC 4,2 (part number 816 253 000 888 2) is a 12 V AGM battery (dual purpose). The manufacturer rates it at 55 Ah, 765 A CCA (EN), 120 min reserve capacity. Published dimensions: 245 × 172 × 200 mm. Weight: 19.7 kg. Values taken from the manufacturer document cited below (checked 2026-11-08).

Voltage12V
Capacity55Ah
CCA765A · EN
Stored energy660Wh · V × Ah
Battery
816 253 000 888 2
BCI group
D34M
EN / DIN / JIS code
n/p
Reserve capacity
120 min
CA
n/p
Dimensions (L × W × H)
245 × 172 × 200 mm
9.65 × 6.77 × 7.87 in
Approx. weight
19.7 kg (43.4 lb)
Polarity
n/p
Terminal type
n/p
Applications (as stated)
marine

“n/p” = not published in the manufacturer document we cite. We never fill missing fields with assumptions.

Source and verification

Source
OPTIMA specification sheet (Johnson Controls / Clarios)
Source document
OPTIMA YellowTOP/RedTOP/BlueTOP specification sheet (Johnson Controls), footer code '12-08-21 15en'
Verified
Data notes (conflicts, conversions, missing fields)

EU-market part number from an older OPTIMA/Johnson Controls specification sheet (footer 12-08-21); current US products and part numbers may differ. Line described as 'Starting and deep cycle battery for marine applications'; 'DC' label not defined on sheet. Dimensions: length_mm/width_mm = base values, height_mm = height including terminals; top cover L 254, W 175; height excl. terminals 173. Capacity labelled '(EN) Ah' with no discharge rate stated. CCA labelled '(EN) CCA'. Reserve capacity labelled '(BCI) Min'. Terminal type and polarity not stated. Sheet is an older Johnson Controls document (footer '12-08-21'); values identical in companion sheet https://uk.optimabatteries.com/download_file/view/7365/2086 (footer '12-08-21 00en'). US part number (e.g. 8002-002) not on this sheet. Technology: sheet cites SPIRALCELL construction and 'absorbent glass mat separator'.

This page describes the battery only. It does not state which vehicles it fits: check the vehicle manufacturer’s specification and the label of the battery fitted.

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