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 a BCI group 24 marine and automotive battery.
It combines a 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, a carrying handle, and a rather acceptable price.
Updated: November 22, 2022.
Exide Edge FP-AGM24DP Features and Specifications
The name of the battery describes the most important features of the 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, and D31M BlueTop Dual Purpose Marine Batteries, which are cylindrical.
- AGM - Absorbed Glass Mat type of battery. It uses electrolyte that is held in glass mats made out of woven, very thin glass fibers. It is a 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.
The 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 a 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 are given in the 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 a very similar automotive FP-AGM24 battery (note missing 'DP'), which is optimized for starting purposes (cranking battery) and, as such, is better as a 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 the 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 |
Note: 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 a 20Ah capacity, just like the larger and heavier Optima D31M BlueTop battery (photo on the right). However, MCA and CCA values are in favor of the Optima D31M BlueTop battery, while RC values are very similar.
Optima D27M BlueTop is slightly larger and heavier but has higher 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).
Since Exide Edge FP-AGM24DP is not always available on the market, it is a good practice to compare it with other group 24 batteries:
| Model | Battery Type Chemistry |
Capacity(Ah) RC (min) |
CCA MCA |
Weight (lbs/kg) Review |
| ACDelco M24AGM | Deep Cycle AGM |
80 140 |
500 625 |
43.0 lbs; ~19.5 kg - |
| Battle Born BB1250 | Deep Cycle LiFePO4 |
50 120 |
60A const. 100A 30s |
22 lbs; 9.96 kg - |
| Battle Born BB1275 | Deep Cycle LiFePO4 |
75 180 |
100A const. 200A 30s |
27 lbs; 12.23 kg |
| Exide Edge FP-AGM24DP | Dual Purpose AGM |
75 145 |
775 930 |
50 lbs; ~22.7 kg Review |
| Lifeline GPL-24T | Deep Cycle AGM |
80 149 |
550 680 |
56 lbs; 25.5 kg - |
| LiTime 12V 100Ah Mini | Deep Cycle LiFePO4 |
100 240 |
100A cont. 250A 5 sec |
19 lbs; 8.6 kg Review |
| Mighty Max ML75-12 | Deep Cycle AGM |
77 - |
- - |
50.71 lbs; ~22.97 kg Review |
| Mighty Max ML75-12 Gel | Deep Cycle Gel |
75 - |
- - |
50.55 lbs; 22.9 kg - |
| NorthStar NSB-AGM24F | Dual Purpose AGM |
76 160 |
840 1000 |
57 lbs; ~25.8 kg - |
| Power Sonic PS-12750 | Deep Cycle AGM |
78 - |
900A 5s | 50.6 lbs; 22.9 kg - |
| UPG UB12750 | Deep Cycle AGM |
75 - |
- - |
49.1 lbs; ~22.3 kg Review |
| VMAXTANKS FLP24-1265 | Deep Cycle LiFePO4 |
65 ~150 |
65A const. 120A 3s. |
15.5 lbs, 7.0 kg - |
| VMAXTANKS MB107-85 | Deep Cycle AGM |
85 170 |
- - |
55 lbs; ~24.9 kg Review |
| VMAXTANKS MR107-85 | Deep Cycle AGM |
85 160 |
- 700 |
55 lbs; ~24.9 kg Review |
| VMAXTANKS SLR-85 | Deep Cycle AGM |
85 180 |
- - |
55 lbs; ~24.9 kg Review |
| Weize FP12750/TL1275 | Deep Cycle AGM |
77 - |
- - |
46 lbs; 20.9 kg Review |
As one can see, the Exide Edge FP-AGM24DP battery is not the heaviest nor the lightest sealed lead-acid battery on the market, but it is one of the best starting/cranking group 24 batteries.
Also, it features very good deep-cycle performances, comparable to some lighter deep-cycle group 24 batteries.
For more reviews and recommendations, check the Exide Edge FP-AGM24DP Amazon link (the link opens in the new window).
