Group 47 (H5, L2, 55L2) Batteries - Dimensions, Features, and Recommendations

Group 47 (H5, L2, 55L2) batteries are medium size batteries, mostly used in automotive and light industrial applications as cranking or dual-purpose batteries for starting mid-range diesel and gas engines and for powering various electric and electronic devices while the main engine(s) are turned off.

Most BCI Group 47 (H5, L2, 55L2) batteries are designed as spill-proof, maintenance-free AGM batteries, but there are also other models on the market as well.

group 47 acdelco

Group 47 Battery Dimensions and Specifications

Standard BCI Group 47 battery features dimensions of (L x W x H) 9 1/16 x 6 7/8 x 7 1/2 inches (246 x 175 x 190 mm) and is very similar to the standard DIN H5 battery (also labeled as L2 battery) and EN 55L2 battery that has physical dimensions of (L x W x H) of 242 x 175 x 190 mm.

The positive terminal is on the Right side of the battery, when the battery is placed in front of the user.

Terminals are commonly automotive terminals, but there are also models with 'Nuts and Bolts' terminals.

The list of most popular BCI Group 47 batteries is relatively short and is given in the following comparison chart:

Model Battery Type Cell Type Ah CCA MCA RC Weight (lbs/kg) Review
ACDelco 47AGM Professional Starting AGM 60 630 - 115 39.2 lbs; 17.8 kg -
Delphi BU9047 MaxStart Starting AGM 60 600 - 100 38.5 lbs; 17.5 kg -
XS Power D4700 BCI Group 47 AGM Battery Dual Purpose AGM 50 - 745 105 41.2 lbs; 18.7 kg -

Note: Amazon affiliate links ('Model' column) open in the new windows, feel free to check them for the most up-to-date offers and prices.

group 47 delphi

On average, group 47 battery features 20h capacity in the 50-60 Ah range, CCA value of 600-630 Amps, MCA value of 700-750 Amps, Reserve Capacity (RC) of 100-115 minutes and weighs around 38-42 pounds (17-19 kg).

Sometimes it is very hard to distinguish 'starting' from 'dual-purpose' AGM battery, and the group 47 batteries are of no exception.

While some batteries are labeled as 'Starting', they are very often designed for 'Stop&Go' applications - they crank diesel and gas engines well, but they also accept charge well, tolerate medium to deep discharges well (not as true deep-cycle batteries, but better than 'classic' starting batteries), etc.

Also, dual-purpose batteries are able to crank internal combustion engines well, but also tolerates deep-discharge and cycle applications well, and are often used in single battery systems where the battery is required to power various systems while the main engine is off, and still be able to crank the engine.

group 47 xspower

Physical dimensions of the group 47 batteries is very similar to several other BCI battery groups, allowing these batteries to be used almost interchangeably.

Here is the list of several of such groups with their maximum dimensions (L x W x H):

- Group 47: 9.6875 x 6.875 x 7.5 inches (246 x 175 x 190 mm),

- Group 78: 10.25 x 7.0625 x 7.6875 inches (260 x 179 x 196 mm),

- Group 35: 9.0625 x 6.875 x 8.875 (230 x 175 x 225 mm), etc.

There are other battery groups of a similar size, and they all differ in one or more dimensions. Also, one has to be careful about battery type, chemistry, terminal type, and orientation and similar, when replacing one battery group with another.


Long Story Short: if you are looking for a new group 47 lead-acid battery, go for good AGM battery from the reputable brand, just be sure to check the battery CCA/Ah rating, terminal type and orientation, base hold-down type, etc.

Model Battery Type Cell Type Ah CCA MCA RC Weight (lbs/kg) Review
ACDelco 47AGM Professional Starting AGM 60 630 - 115 39.2 lbs; 17.8 kg -
Delphi BU9047 MaxStart Starting AGM 60 600 - 100 38.5 lbs; 17.5 kg -
XS Power D4700 BCI Group 47 AGM Battery Dual Purpose AGM 50 - 745 105 41.2 lbs; 18.7 kg -

Note: Amazon affiliate links ('Model' column) open in the new windows, feel free to check them for the most up-to-date offers and prices.