Battery Equivalents and Replacements

Mighty Max ML100-12 12V 100 Ah AGM Deep Cycle Battery

Mighty Max ML100-12 12V 100 Ah AGM is a BCI Group 27 battery, designed for deep cycle, off-the-grid applications.

Mighty Max ML100-12 is an affordable and reliable 100 Ah battery that is not well suited for starting/cranking applications, but it can be used as an excellent trolling motor battery, solar battery, standby battery, for electric vehicles, and carts, etc.

Published: September 4, 2019.

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Mighty Max ML100-12 Features and Specifications

Mighty Max ML100-12 is a maintenance-free, spill-proof Absorbent Glass Mat (AGM) lead-acid battery, featuring a heavy-duty calcium-alloy grid for deep cycle operations.

Mighty Max ML100-12 is BCI group 27 battery, with dimensions (L x W x H) of 12.0 x 6.63 x 8.29 (8.48 with terminals) inches (305.5 x 168.5 x 210.5/215.5 mm).

Some sources claim that Mighty Max ML100-12 is a BCI group 30H (13.5 x 6.8125 x 9.25 inches) battery, but battery group 27 can fit the battery group 30H compartment easily.

Mighty Max ML100-12 is also one of the lightest AGM 100 Ah batteries - it weighs 63.9 lbs (~29 kg) and it features two handles for carrying it around.

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Mighty Max ML100-12 features internal thread terminal posts, ensuring firm contact between the battery and the battery cables.

Mighty Max ML100-12 is designed for 10-year standby use and it comes with a 1-year warranty.

Operating temperatures are:

- storage: from -4°F to 140°F (-20°C to 60°C),

- charging: from 14°F to 140°F (-10°C to 60°C),

- discharging: from -4°F to 140°F (-20°C to 60°C).

Mighty Max ML100-12 may be used in standby and in deep cycling applications. When being used in standby applications, the maximum recommended charging voltage is 13.6 - 13.8 volts. When the battery is used in cycling applications, the maximum charging voltage should be 14.5 - 14.9 volts.

When the battery is being charged using constant voltage, the charging voltage should be in the 13.8 and 14.1 volts range.

In any case, the charging voltage should NOT be more than 15.0 volts and the charging current should NOT be larger than 27-30 Amps.

Mighty Max ML100-12 features a low self-discharge rate, which is ~3% per month at 68°F (20°C), allowing the battery to remain in the storage for up to 6 months at room temperature, without the charge dropping below 20% DoD (or 80% SoC).

The internal resistance of the fully charged Mighty Max ML100-12 battery at 77°F (25°C) is 5 mΩ. Short circuit current is ~1800 Amps and maximum 5s current is ~900 Amps - not the most impressive currents for 100 Ah 12V AGM battery, but again, this is NOT what is this battery designed for!

Mighty Max ML100-12 Discharging Features

Constant current discharge characteristics of the Mighty Max ML100-12 are given in the following chart (in Amps, at 77°F/25°C):

End Voltage Per Cell Battery End Voltage 10 min 15 min 30 min 45 min 1 hour 3 hours 5 hours 10 hours
1.60 V 9.6 V 207 162 92.0 66.5 53.5 24.0 16.2 9.20
1.65 V 9.9 V 195 154 89.3 65.1 52.5 23.5 16.0 9.15
1.70 V 10.2 V 183 145 86.4 63.6 51.3 23.0 15.7 9.10
1.75 V 10.5 V 170 136 83.2 62.0 50.0 22.5 15.4 9.05
1.80 V 10.8 V 155 126 80.0 60.0 48.5 21.8 15.0 9.00

Constant power discharge characteristics of the Mighty Max ML100-12 battery are given in the following chart (in watts, at 77°F/25°C):

End Voltage Per Cell Battery End Voltage 10 min 15 min 30 min 45 min 1 hour 2 hours 3 hours 5 hours
1.60 V 9.6 V 2250 1830 1032 750 618 372.0 280.8 189.0
1.65 V 9.9 V 2178 1734 1008 738 606 366.0 276.0 187.2
1.70 V 10.2 V 2100 1686 978 726 594 358.2 270.6 185.4
1.75 V 10.5 V 2010 1626 948 708 582 349.2 265.2 183.0
1.80 V 10.8 V 1890 1548 912 690 570 339.6 259.6 180.0

Note: these values are average values and they vary slightly from the battery to battery.

Mighty Max ML100-12 Cycle Service Life

The service life of deep cycle batteries is often measured in the number of cycles that the battery can withstand with a certain capacity loss.

The number of cycles also depend on the DoD% (Depth of Discharge percentage) and for Mighty Max ML100-12 cycle service life is:

- 100% DoD: ~185 cycles down to 80% capacity, ~250 cycles down to 60% capacity,

- 50% DoD: ~360 cycles down to 80% capacity, ~470 cycles down to 60% capacity.

- 30% DoD: ~940 cycles down to 80% capacity, ~1500 cycles down to 60% capacity.

For short, the operational life of the Mighty Max ML100-12 can be extended by avoiding discharging the battery below a certain level (10.5 volts for large loads/currents, 10.8 volts for small loads/currents).

Mighty Max ML100-12 as Trolling Motor Battery

minnkota endura c2 mWith its 100 Ah capacity, Mighty Max ML100-12 can be used as a high-capacity trolling motor battery.

Small trolling motors requiring some 20 Amps (or larger trolling motor with decreased power) can be powered for at least 3 hours with some energy left.

Larger trolling motors requiring ~50 Amps can be powered for ~1 hour, but this time can be extended if the trolling motor is not pushed to its limit all the time.

Note: If your trolling motor is operating almost all the time at full throttle, your trolling motor is under-dimensioned. For safety reasons get a stronger one and consider a larger battery (or more batteries), again, for safety reasons.

Boats with single battery electric systems may use Mighty Max ML100-12 even for starting small internal combustion engines, as long as their cranking Amps are below 200 Amps.

Note: as the Mighty Max ML100-12 battery is being discharged during trolling (or any other application requiring the use of a single onboard Mighty Max ML100-12 battery), the battery's capability to provide large cranking currents is decreased. Worst case scenario - if Mighty Max ML100-12 is discharged below a certain level, You will have to manually start the engine or you can use some kind of battery jumper.

Boats with two batteries electrical system may use Mighty Max ML100-12 as deep cycle marine AGM battery not only for trolling but for all other purposes as well, like navigation lights, onboard electronics, fish finders, etc. And if/when the Mighty Max ML100-12 is fully discharged, a fully charged cranking battery is used for starting the boat's engine(s).

Mighty Max ML100-12 as Fishing Kayak Battery

Fishing kayaks, especially ocean-going fishing kayaks are more and more filled with electric and electronic equipment requiring a stable and reliable source of power.

Although Mighty Max ML100-12 is one of the lightest 100 Ah 12V AGM batteries, note that it is still rather heavy - it weighs 63.9 pounds (~29 kg) and its positioning on the kayak must be as low as possible, preferably below the waterline, in a watertight compartment.

If such battery is positioned above the waterline, the stability of the kayak is jeopardized - such kayak can easily tumble over, and that is not something nice, especially when big game fishing, with all the chum in the water :)

Typical electric equipment found on large(r) kayaks includes LED navigation lights (1 - 3 Amps), fish finder (0.2 - 3 Amps), trolling motor (10-25 Amps, rarely more), communication devices (marine radio, smartphones, etc.), etc.

Mighty May ML100-12 is well suited for such electric load, but its endurance (like endurance of all similar batteries) depends on the fishing habits of the user - if the largest load (kayak trolling motor) is used at full throttle, even 100 Ah battery will not last more than ~3h.

For short: if you need trolling motor for your fishing kayak and you plan on trolling all day long, consider either lithium trolling motor batteries or even a small gas outboard engine.

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Mighty Max ML100-12 vs Other 100 Ah 12V AGM Batteries

The following chart lists the most popular ~100 Ah marine batteries and their features and specifications (alphabetic order):

Model Battery Type
Battery Chemistry
Capacity (Ah)
RC (min)
CCA
MCA
Weight (lbs/kg)
Review
Aicipow PDAC-12100 Deep Cycle
LiFePO4
100
~240
100A cont. 26 lbs; 11.8 kg
-
AIMS Power LFP12V100A Deep Cycle
LiFePO4
100
~240
-
-
30.2 lbs; 13.7 kg
-
AIMS Power LFP12V100B Deep Cycle
LiFePO4
100
~240
100A cont.
200A 10s
28.5 lbs; 12.9 kg
-
Banshee LFP-31M Dual Purpose
LiFePO4
100
~240
1200 CCA 24.2 lbs; 11 kg
-
Battle Born 100Ah 12V LiFePO4 Deep Cycle
LiFePO4
100
~240
-
-
29 lbs; 13.2 kg
Review
Bioenno Power BLF-12100WS Deep Cycle
LiFePO4
100
~240
100A cont.
200A 5s
28.1 lbs; 12.8 kg
-
Chins 12V100Ah Deep Cycle
LiFePO4
100
~240
100A cont.
300A 5s.
23.9 lbs; 10.8 kg
-
Eco-Worthy 12V150Ah Deep Cycle
LiFePO4 
150
~360
150A cont. 36.7 lbs; 16.6 kg
-
Exide XMC-31 Deep Cycle
AGM
100
200
925
1110
68 lbs; 31 kg
Review
ExpertPower EP12100 Deep Cycle
LiFePO4
100
~240
-
-
29.7 lbs; 13.5 kg
Review
ExpertPower EXP100 Deep Cycle
AGM
100
-
-
-
63.94 lbs; 30 kg
-
FLYPOWER 12V 100Ah Deep Cycle
LiFePO4
100
~240
100 cont.
200A surge 3-5s
24.3 lbs; ~11 kg
Review
GreenLiFE Battery GL100 Dual Purpose
LiFePO4
100
240
-
-
28 lbs; 12.7 kg
-
GreenLiFE GL5024V Deep Cycle
LiFePO4
50Ah @24V
~120 @24V
- 32 lbs; 14.5 kg
-
GreenLiFE GL36V40 Deep Cycle
LiFePO4
40Ah @36V
~96 @36V
50A cont. 31.3 lbs; 14.2 kg
-
Interstate DCM0100 Deep Cycle
AGM
110
3h @23.2A
351.5A 5 min 67.5 lbs; ~30.6 kg
Review
JITA 12V100Ah Deep Cycle
LiFePO4
100
~240
100A cont. 24.2 lbs; ~11.0 kg
-
Lifeline GPL-31T Deep Cycle
AGM
105
195
600
750
69 lbs;  31.5 kg
-
Lifeline GPL-31XT Deep Cycle
AGM
125
230
650
800
69 lbs; 31.5 kg
-
Lifeline GPL-3100T Dual Purpose
AGM
100
228
810
950
67 lbs; 30.4 kg
-
LiTime (Ampere Time) 12V 100Ah Deep Cycle
LiFePO4
100
~240
280A 5s 24.25 lbs; ~11 kg
Review
Miady LFP100AH Deep Cycle
LiFePO4
100
~240
-
-
28.9 lbs; 13.1 kg
-
Mighty Max ML100-12 DS-IGEL Deep Cycle
Gel
100
180+
-
-
68.2 lbs; 30.9 kg
-
NorthStar ELT-AGM31 Dual Purpose
AGM
100
190
925
1050
65.7 lbs; 29.8 kg
-
NorthStar NSB-AGM31 Dual Purpose
AGM
103
220
1150
1370
75 lbs; 34.0 kg
-
NorthStar NSB-AGM31M Dual Purpose
AGM
103
220
1150
1370
75 lbs; 34.0 kg
-
Odyssey 31-PC2150S Dual Purpose
AGM
100
205
1150
1370
77.8 lbs; 35.3 kg
Review
Optima 8052-161 D31M Dual Purpose
AGM
75
155
900
1125
59.8 lbs; 27.1 kg
Review
PacPow 12V 100Ah Deep Cycle
LiFePO4
100
~240
100A cont.
300A 10s
27.56 lbs; 12.5 kg
Review
Power Queen 12V100Ah Deep Cycle
LiFePO4
100
~240
100A cont. 25.25 lbs; 11.0 kg
-
Renogy RNG-BATT-AGM12-100 Deep Cycle
AGM
104
180+
-
-
66 lbs; 29.9 kg
Review
Renogy RNG-BATT-GEL12-100 Deep Cycle
Gel-Cell
100
180+
-
-
60 lbs; 27.2 kg
Review
Renogy RBT100GEL12-G1 Deep Cycle
Gel-Cell
100
~175
-
-
63.9 lbs; 29 kg
Review
Renogy RBT100LFP12S-G1 Deep Cycle
LiFePO4
100
~240
-
-
26 lbs; 11.8 kg
Review
Scream Power 12V100Ah Deep Cycle
LiFePO4
100
~240
? 24.3 lbs; 11 kg
-
Trojan T31-AGM Deep Cycle
AGM
102
200
-
-
69 lbs; 31.3 kg
-
Trojan T31-GEL Deep Cycle
Gell-Cell
102
200
-
-
70 lbs; 31.7 kg
-
UPG UB121100 Deep Cycle
AGM
110
-
-
-
70 lbs; 29.8 kg
-
Vatrer 12V 100Ah Deep Cycle
LiFePO4
100
240
100A cont. 33 lbs; 15 kg
Review
VMAXTANKS SLR125 Deep Cycle
AGM
125
260
-
-
75 lbs; 34 kg
Review
VMAXTANKS MR137-120 Deep Cycle
AGM
120
230
-
900
75 lbs; 34 kg
Review
VMAXTANKS VPG12C-100LFP Deep Cycle
LiFePO4
100
~240
-
-
26.4 lbs; ~12.0 kg
-
VMAXTANKS XTR31-135 Deep Cycle
AGM
135
265
730
920
77 lbs; 34.9 kg
-
XS Power XP3000 Deep Cycle
AGM
120
240
-
-
73 lbs;  33.1 kg
-
Weize 12V 100Ah AGM Deep Cycle
AGM
100
-
-
-
60 lbs; 27.2 kg
Review
Weize 12V 100Ah Gel Deep Cycle
Gel-Cell
100
<180
-
-
67 lbs; 30.4 kg
Review
Weize FPLI-12100AH Deep Cycle
LiFePO4
100
~240
100A cont.
200-250A surge
26.4 lbs; 12.0 kg
Review
WindyNation BAT-NSAP12-100 Deep Cycle
AGM
106
180+
-
-
67 lbs; 30.4 kg
Review
Wingda W100-12V100AH Deep Cycle
LiFePO4
100
~240
50A cont. 23.8 lbs; 10.8 kg
-
Zooms 12V 100Ah Deep Cycle
LiFePO4
100
~240
100A cont. 25.35 lbs; ~11.5 kg
Review

mighty max ml100 12 mNote: Amazon affiliate links in the chart open in the new windows, feel free to check them for more reviews and recommendations.

Also, there are many other marine, automotive, off-the-grid, solar, general-purpose, and similar batteries in the 100 Ah range, but these are most popular due to their combination of durability, performance, and price - hence, we consider them to be 'the best' 100 Ah 12V batteries.

Mighty Max ML100-12 is not designed for cranking applications, but it can start smaller gas and diesel engines (requiring max. 150-200 MCA), can be used as trolling motor battery, solar battery, RV battery, etc.

Also, it is one of the most cost-effective and affordable 100 Ah 12V AGM batteries on the market.

So, if you are looking for a deep cycle AGM battery and its features fit your needs, consider it as your new battery.

For more reviews and the most up-to-date prices and offers, check Mighty Max ML100-12 12V 100 Ah AGM Battery Amazon link (link opens in the new window).