12v 120ah deep cycle battery

Prostar best 12v 120ah deep cycle battery for off-grid energy storage

Deep Cycle Battery | 12V 120AH | Sealed | Maintenance-free | Dimension: 407x174x210x233mm

SKU: GPD120-12 Category:

Prostar best 12v 120ah deep cycle battery is a lead battery designed to provide sustained power over a long period and run reliably until it is 80% discharged or more, at which point it needs to be recharged. It is important to note that although deep cycle batteries can be discharged up to 80%, strongly recommend not discharging below 45% to extend the life of the battery.

Maintenance free sealed 12v 120ah deep cycle battery is an inverse correlation between the depth of discharge (DOD) of the battery and the number of charge and discharge cycles it can perform; with an average “depth of discharge” of around 50% suggested as the best for storage vs cost.

12v 120ah deep cycle battery

Sealed 12v 100ah deep cycle battery is the battery that user can charge and discharge again and again without posing much damage to the cells of the battery. Deep Cycle Batteries are the vital part in different types of renewable energy systems, which require electricity to be stored for future use.

Features of 120AH Deep Cycle Battery

1) Longer Cycle Service Life

Deep Cycle (high-density active material and thick plates) design & special 4BS lead paste technology prolongs the cycle service life.

2) Excellent Discharging Ability

Radial grid design & tight assembly technology ensures an excellent high-rate discharge performance.

3) Excellent Deep Cycle Ability

Unique grid alloys & special positive/negative lead paste formulations makes the battery perform excellent in deep cycle using and recover quickly upon over discharging and extend the float service life.

4) Low Self Discharge

Using high purity raw materials ensures the battery has less self-discharge.

5) Environmental & Non-polluting

Gas Recombination technology ensures the battery high seal reacting rate, which can prevent the acid fog from separating out.

6) Safe & Reliable

Efficient venting system automatically release excess gas when the pressure rises above the normal level & reseals the valves when it returns to the normal rate, which can protect the battery from bursting.

Construction of Deep Cycle Battery

deep cycle battery construction

How to Assembly Battery

deep cycle battery assembly

Deep Cycle Battery Performance Characteristics

Battery Performance Characteristics

Battery Terminal

Battery Terminal

Battery Applications

  1. >> Cathodic protection, which might include marine use
  2. >> Other marine use, especially on a sailboat lacking power generation capability, generally smaller vessels
  3. >> Trolling motors for recreational fishing boats
  4. >> Industrial electrically-propelled forklifts and floor sweepers
  5. >> Motorized wheelchairs
  6. >> Off-grid energy storage systems for solar power or wind power, especially in small installations for a single building or motorhome
  7. >> Power for instruments or equipment at remote sites
  8. >> Recreational vehicles
  9. >> Traction batteries to propel vehicles, such as golf carts, and other highway electric vehicles
  10. >> Traffic signals
  11. >> Uninterruptible power supply (‘UPS’), usually for computers and associated equipment, but also sump pumps
  12. >> Audio equipment, similarly to a UPS but also in certain ‘clean power’ devices to supply clean DC power isolated from the public electric supply for inversion to AC to maximize audio signal reproduction

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12v 120AH Deep Cycle Battery Datasheet

Characteristics

Nominal Voltage 12V
 Nominal Capacity (20 hour rate) 120Ah
Capacity

25℃(77°F)

10 hour rate (10.8A) 108Ah
5 hour rate (19.1A) 95.5Ah
1 hour rate (66.5A) 66.5Ah
Internal Resistance Full Charged Battery 25℃ ≤4.8mΩ
Capacity affected by Temperature

(10 hour )

40℃ (104°F) 102%
25℃ (77°F) 100%
0℃ (32°F) 85%
-15℃ (5°F) 65%
Self-Discharge

25℃(77°F) Capacity

after 3 month storage 90%
after 6 month storage 80%
after 12 month storage 62%
Charge (Constant Voltage) 25℃(77°F) Float Initial Charging Current Less than 24A

Voltage 13.6-13.8V

Cycle Initial Charging Current Less than 24A

Voltage 14.4-14.9V

Discharge Constant Current per Cell (Amperes at 77°F25°C)

F.V/Time 5min 10min 15min 30min 45min 1h 2h 3h 5h 8h 10h 20h
1.60V 285.1 181.8 154.4 98.6 72.5 66.5 42.3 29.7 20.2 13.3 11.9 6.6
1.65V 279.9 178.5 151.6 96.8 71.2 65.3 41.5 29.2 19.8 13.1 11.7 6.48
1.70V 274.8 175.2 148.8 95.0 69.8 64.1 40.8 28.6 19.5 12.8 11.4 6.36
1.75V 269.6 171.8 146.0 93.2 68.5 62.9 40.0 28.1 19.1 12.6 11.2 6.24
1.80V 259.2 165.2 140.4 89.6 65.9 60.5 38.4 27.0 18.4 12.1 10.8 6.00

Discharge Constant Power per Cell (Watts at 77°F 25°C)

F.V/Time 5min 10min 15min 30min 45min 1h 2h 3h 5h 8h 10h 20h
1.60V 548.9 349.9 297.3 189.8 139.5 128.1 81.4 57.2 38.9 25.6 22.9 12.7
1.65V 538.9 343.5 291.9 186.4 137.0 125.7 79.9 56.1 38.2 25.1 22.5 12.5
1.70V 528.9 337.2 286.5 182.9 134.4 123.4 78.5 55.1 37.5 24.7 22.0 12.2
1.75V 518.9 330.8 281.1 179.5 131.9 121.1 77.0 54.1 36.8 24.2 21.6 12.0
1.80V 499.0 318.1 270.3 172.6 126.8 116.4 74.0 52.0 35.3 23.3 20.8 11.5