Group 94R Batteries - Dimensions, Features and Recommendations
BCI Group 94R batteries are very popular automotive and light industrial batteries, commonly used on the passenger and light commercial vehicles. BCI Group 94R batteries are also known as H7, L4 and/or LN4 batteries.
They are often installed on vehicles manufactured by BMW, Mercedes, Audi, Volkswagen etc. As such, BCI Group 94R batteries are designed to be maintenance free batteries, to be able to provide strong starting current even in low temperature conditions, to accept charge quickly, to power broad range of onboard electronics, to endure automatic start-stop applications etc.
BCI Group 94R batteries' physical dimensions are (L x W x H) 12.4 x 6.9 x 7.5 inches (315 x 175 x 190 mm) and they weigh on average around 52 - 57 pounds (23.6 - 25.8 kg) - most models feature one or two carrying handles and they can be easily carried to the shorter distances by one adult, although not recommended (don't underestimate 50+ pounds batteries when they have to be carried ...).
BCI Group 94R batteries feature 'R' as part of their label - this means that the positive terminal is on the right (reversed) side of the battery.
Most popular BCI Group 94R batteries are given in the following comparison chart:
|Model||Battery Type||Chemistry||Ah||CCA||MCA||RC||Weight (lbs/kg)||Review|
|ACDelco 94RAGM||Dual Purpose||AGM||80||800||-||140||51.6 lbs; 23.4 kg||-|
|Deka 9A94R||Dual Purpose||AGM||80||800||-||140||51.5 lbs; 23.3 kg||-|
|Delphi BU9094R||Dual Purpose||AGM||80||800||-||140||52 lbs; 23.6 kg||-|
|Exide Edge FP-AGML4/94R||Dual Purpose||AGM||80||800||-||140||53.3 lbs; 24.1 kg||-|
|NorthStar NSB-AGM94R||Dual Purpose||AGM||76||840||-||158||57 lbs; 25.8 kg||-|
|Odyssey 94R-850||Dual Purpose||AGM||80||850||-||150||54.8 lbs; 24.9 kg||-|
Note: Amazon affiliate links in the table open in the new windows, feel free to check them for most up-to-date offers and prices.
As one can see, BCI Group 94R batteries are generally designed as dual purpose, Absorbent Glass Mat (AGM) batteries. These are non-spillable, maintenance free batteries with increased tolerance to vibrations and mechanical impacts, and are often used as automotive, marine and industrial starting and dual purpose batteries.
As starting batteries, new, fully charged BCI Group 94R batteries are able to provide 800+ CCA, which is more than enough to start most gas and diesel engines found at passenger cars, light commercial vehicles, RV vehicles, trucks, boats, industry generators etc.
As dual purpose batteries, they are able to power onboard electric and electronic systems like various pumps, GPS and alarm systems, lights etc. and still be able to start the main engine quickly and reliably (start-stop applications).
Also, they are designed to be quickly recharged in order to be ready as fast as possible for next 'stop' cycle.
Because of all these reasons, BCI Group 94R batteries work hard in many vehicles, and if you need one for such application, don't go cheap, or your battery will fail when you need it most ...
Due to these requirements, nominal capacity of the 94R batteries is not that important - 70-80 Ah batteries are large enough to power car alarm and remote control system for weeks (even longer) when the vehicle is parked and not used.
But, Cold Cranking Amps (CCA - how good the battery is as starting battery) and Reserve Capacity (RC - how good the battery is for powering onboard systems while the main engine is Off) are more important for everyday use.
Recommended BCI Group 94R Battery
One of the most popular BCI Group 94R batteries is ACDelco 94RAGM Professional AGM Automotive BCI Group 94R Battery.
It features nominal capacity of 80 Ah, 800 CCA, 140 min RC and it weighs 51.6 lbs (23.4 kg). These values are very similar to the values of Deka 9A94R, Delphi BU9094R and Exide Edge FP-AGML4/94R batteries.
ACDelco 94RAGM is highly rated battery, tested by many users in countless situations.
As such, ACDelco 94RAGM is highly recommended BCI Group 94R battery as car, truck, boat etc battery, especially considering its price - it usually costs more than Deka 9A94R, Delphi BU9094R and Exide Edge FP-AGML4/94R batteries, but also less than NorthStar NSB-AGM94R or Odyssey 94R-850 batteries.
NorthStar NSB-AGM94R/L4 Battery vs Odyssey 94R-850 Battery
NorthStar NSB-AGM94R/L4 and Odyssey 94R-850 batteries are two evenly matched, high performance batteries that also feature very nice price tag - but, what you pay is what you get.
These batteries are designed as true dual-purpose batteries and can be used as starting batteries and as deep discharge cycle batteries.
CCA: NorthStar NSB-AGM94R/L4 battery is able to provide 840 CCA, while Odyssey 94R-850 battery comes with 850 CCA - this 10 Amps difference is a really negligible.
Reserve Capacity of NorthStar NSB-AGM94R/L4 battery is 158 minutes, while RC of Odyssey 94R-850 battery is 150 minutes - again, very similar value.
Nominal capacity of NorthStar NSB-AGM94R/L4 Battery is 76 Ah and 80 Ah of Odyssey 94R-850 battery.
As cycling battery, NorthStar NSB-AGM94R/L4 battery is able to withstand, for example, 900 cycles down to 50% DoD, while Odyssey 94R-850 battery is able to withstand up to 400 cycles down to 100% DoD and still be able to recover using smart (intelligent) AGM battery chargers.
So, which one is better? Personally, both of these batteries are excellent BCI Group 94R batteries and when choosing which one to buy, consider their price, local availabiliy and your personal preferences.
Note: author of this article is slightly biassed regarding Odyssey batteries, so ... :)
Price of group 94R batteries varies depending on their capacity, warranty, discharge characteristics and similar:
Since these batteries are not the cheapest batteries on the market, before ordering new group 94R battery, be sure to check specifications of your old battery (especially the battery size and the battery compartment size) and compare it with the batteries you intend to order.
Note: whatever you do, stay safe. These batteries can provide a serious energy burst and can cause damage, injuries or worse. If you are unsure what to do, seek advice of certified professionals, especially if you have to change the battery on the BMW, Mercedes, Audi or any similar car ...