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Mighty Max Battery ML55-12 Specifications

Mighty Max Battery ML55-12


Mighty Max Battery ML55-12 Overview:

This rechargeable ML55-12 sealed lead acid battery from the Mighty Max brand is compatible with various products including solar panels, UPS, Garage doors, Emergency lighting, lawn, trolling motor, garden, outdoor functions, camping, security, golf carts, and other battery needs. It is a 12-volt battery with a 55AH capacity.

This AGM battery consists of 6 cells and its cover and container are made up of ABS material. It has a high discharge rate, works in different temperature environments, and long service life.

You have to purchase a nut and bolt for the connection of wires with the terminal of a battery. Its AGM technology and valve regulated design provide its consumers a worry-free experience for installing an indoor environment and leakage-free.

This ML55-12 product is built with a calcium-alloy grid that increases service life and performance. Sulfuric acid is used as a dilute and this battery is maintenance-free.

It is a non-spillable design, that’s why can be installed in different positions.


The company provides a warranty of 1 year and its total weight is 36.96 lbs.

Mighty Max Battery ML55-12 Full Specifications:

ModelMighty Max Battery ML55-12
Nominal Voltage
12 Volt
TypeSLA (Sealed Lead Acid), AGM (Absorbent Glass Mat)
Valve regulated design
Number of cell
Compatible withMedical devices, Garage doors, Solar panels, Electric gates, UPS, Electric vehicle, Engine starters, Emergency lighting, and other battery needs.
TerminalNut and Bolt type – Internal Thread
Positive PlateLead dioxide
Negative PlateLead
Safety ValveRubber
ElectrolyteSulfuric Acid
Internal ResistanceFull Charged Battery 25 Degree Centigrade: 8m ohm
Max. Discharge Current25 Degree Centigrade: 550A(5S)
Capacity (25 Degree C):
20 hour rate (2.9A, 10.8V)
10 hour rate (5.5A, 10.8V)55Ah
5 hour rate (9.6A, 10.5V)48Ah
1 hour rate (35.2A, 9.6V)35.2Ah
Capacity affected by Temperature (10 hour rate):
40 degree C
25 degree C100%
10 degree C85%
5 degree C65%
Self-Discharge (20 degree C):
Capacity after 3 month storage
Capacity after 6 month storage80%
Capacity after 12 month storage60%
Charge (Constant Voltage):
Float13.6~13.8 Volt/77 Degree F, 25 degree C
14.4~14.7 Volt/77 Degree F, 25 degree C
Weight36.96 lbs, 16.8 kilograms
9 x 5.5 x 8.19 (L x W x H ) inches, 228 x 140 x 208 (L x W x H ) mm
Warranty1 year
Disclaimer: Dear visitor, We tried our best but we cannot guarantee that the specifications on this page is 100% correct (Human error is possible). For 100% correct specifications always visit the nearest local shop.

Mighty Max Battery ML55-12 Features:

  • Longer life
  • Easy to handle
  • Compact design
  • Non-Spill able design
  • High discharge rate
  • Maintenance-free
  • 55 AH
  • 6 Cell
  • 1 year brand warranty

Mighty Max ML55-12 battery constant current discharge rate:

(at 25 Degree C, 77 Degree F)

Voltage Cell End PointVoltage Battery End Point5 min.10 min.15 min.30 min.1 hour3 hour5 hour10 hour20 hour
1.60 V9.6 V17113098.
1.65 V9.9 V16212394.056.534.414.39.885.652.97
1.70 V10.2 V15211589.554.533.614.09.755.602.95
1.75 V10.5 V14110884.45332.713.79.605.552.93
1.80 V10.8 V12810080.551.031.613.49.435.502.90

(Values in Ampere)

ML55-12 Constant power discharge:

Voltage Cell End Point
Voltage Battery End Point
5 min.10 min.15 min.30 min.45 min.1 hour2 hour
3 hour
5 hour
1.60 V9.6 V191914821146690530.4428.4255.0182.4116.4
1.65 V9.9 V186013981098678348.4418.8250.2177.0114.6
1.70 V10.2 V174613201056666511.8409.2244.8173.5112.8
1.75 V10.5 V162612421008654500.4399.7238.8169.8112.2
1.80 V10.8 V15421152954642487.2389.4232.8166.2111.0

(Values in Wattage)

Trolling Motor Battery ML55-12:

This 12-volt deep cycle battery is compatible with trolling batteries and is recommended for trolling motors.

Mighty Max ML55-12 Specifications

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