Battery Equivalents and Replacements

Exide Edge FP-AGM24DP Flat Plate AGM Sealed Dual Purpose Marine Battery

Exide Edge FP-AGM24DP Flat Plate AGM Sealed Dual Purpose Marine Battery is BCI group 24 marine and RV battery. It combines very good starting power with deep cycle capabilities, making it suitable for various roles, including trolling motor battery, cranking battery and similar. It comes with dual terminals, carrying handle and more than acceptable price.

Published: December 27, 2018.

exide edge fp agm24dp 1

Exide Edge FP-AGM24DP Features and Specifications

Name of the battery describes most important features of Exide Edge FP-AGM24DP battery:

- FP - Flat Plate - construction of the battery is in the form of flat plates, unlike, for example, Optima D34M, D27M, D31M BlueTop Dual Purpose Marine Batteries, which are cylindrical.

- AGM - Absorbed Glass Mat type of battery. It uses electrolyte that is held in the glass mats made out of woven, very thin glass fibers. It is spill proof, maintenance-free design, with no acid leaks.

- 24 - Battery BCI Group Size.

- DP - Dual Purpose - battery is designed to support both deep cycling operations and as starting/cranking battery.

Nominal voltage of this battery is 12 V, float voltage (at 25°C/80°F) is 13.5 - 13.8 V and cycling voltage (at 25°C/80°F) is 14.1 - 14.4 V.

Physical dimensions (L x W x H - height to cover): 10.2 x 6.8 x 7.9 inches (~26 x 17.2 x 20 cm). Note: total height of the battery is 8.7 inches (~22 cm). Weight of the battery: 50 pounds (~22.7 kg).

FP-AGM24DP is true dual purpose battery:

- CA (Cranking Amps) or MCA (Marine Cranking Amps) - 930 Amps

- CCA (Cold Cranking Amps) - 775 Amps

- 20 Ah Capacity - 75 Ah

- RC (Reserve Capacity) - 145 min

Reserve capacity value is how long (in minutes) a new, fully charged, 12V battery, at 80°F (~25°C) can deliver 25A current and maintain at least 10.5V of voltage. Discharge times depend on battery load (current in Amps) and is given in following table for various battery loads:

Current (Amps) 5 Amps 10 Amps 15 Amps 20 Amps 25 Amps 75 Amps
Discharge times (minutes) 870 min 420 min 270 min 192 min 145 min 38 min

Note: these values are for marine/RV FP-AGM24DP battery - Exide has very similar automotive FP-AGM24 battery (note missing 'DP'), which is optimized for starting purposes (cranking battery) and as such is better as cranking battery, but it is not recommended as dual purpose/deep cycling battery.

So, if you do need dual purpose battery, go for this, Exide Edge FP-AGM24DP battery.

Exide Edge FP-AGM24DP vs. Optima D34M, D27M, D31M BlueTop Batteries

Exide Edge FP-AGM24DP is dual purpose battery and perhaps best thing to do is to compare it with other dual purpose batteries, for example, Optima BlueTop batteries. Technical data of Optima D34M, D27M, D31M BlueTop batteries and Exide Edge FP-AGM24DP battery is given in the following table:

Model Dimensions (LxWxH inches) Weight Capacity CA/MCA CCA RC
Optima D34M BlueTop 10.06 x 6.88 x 7.94 43.5 lbs 55 Ah 870 A 750 A 120 min
Optima D27M BlueTop 12.19 x 6.81 x 8.75 53.8 lbs 66 Ah 1000 A 800 A 140 min
Optima D31M BlueTop 12.81 x 6.56 x 9.38 59.8 lbs 75 Ah 1125 A 900 A 155 min
Exide Edge FP-AGM24DP 10.2 x 6.8 x 8.7 50 lbs 75 Ah 930 A 775 A 145 min

optima d31m bluetopNote: Battery links in the table are Amazon affiliate links. Batteries in the table are sorted according to their 20h capacity.

As one can see, Exide Edge FP-AGM24DP has 20Ah capacity just like larger and heavier Optima D31M BlueTop battery (photo on the right). However, MCA and CCA values are in favor of Optima D31M BlueTop battery, while RC values are very similar.

Optima D27M BlueTop is slightly larger and heavier, but has hgiher MCA and CCA values, with RC being very similar, but in favor of Exide Edge FP-AGM24DP battery.

Optima D34M BlueTop is lighter some 6 pounds and is somewhat comparable (less than 10% difference) to Exide Edge FP-AGM24DP in terms of MCA and CCA values.

For short - Optima BlueTop and Exide Edge FP-AGM24DP batteries are true dual purpose batteries, however, Optima BlueTop batteries have better starting characteristics, while Exide Edge FP-AGM24DP has better low(er) current discharge characteristics (2-3 hours or longer).

For more reviews and recommendations, check Exide Edge FP-AGM24DP Amazon link (link opens in the new window).

Amazon Search:

- Group 24 Battery

- Group 34 Battery

- 10 Amps AGM Battery Charger

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