FT620-51
  • 12-volts
  • 51 Group Size
  • 100 mins @ 25 amps
  • 17 mins @ 75 amps
  • 43 AH @ 5HR
  • 55 AH @ 20HR
  • 745 CA @ 32°C
  • 620 CCA @ 0°C
FT620-51

FT620-51 High Capacity Dual Purpose AGM Battery

Cycling Capacity
20 hour rate 55 Amp Hours
Reserve Capacity
@ 25 Amps 100 minutes @ 75 Amps 17 minutes
Mechanical Specifications
Group Size 51
Terminal Type M6
Total Height 8.35" (212 mm)
Height 8.19" (208 mm)
Width 5.43" (138 mm)
Length 9.02" (229 mm)
Weight 39.7 lbs (18 kg)
Case Type ABS Plastic - Flame Res Rating UL94-HB
Discharge Table (Constant Current)
Time Amps Rate
20 hr 2.7 0.05 CA
10 hr 5.2 0.1 CA
8 hr 6 0.13 CA
5 hr 9.7 0.25 CA
3 hr 14.2 0.33 CA
2 hr 18.1 0.5 CA
1 hr 32.1 1 CA
Electrical Specifications
Nominal Voltage 12 Volt
Capacity @ 100 hour rate 60 AH
Capacity @ 20 hour rate 55 AH
Capacity @ 10 hour rate 49 AH
Capacity @ 5 hour rate 43 AH
CCA 620
CA or MCA 745
Short Circuit Current 1729 Amps
Internal Resistance 7.2m Ω
Charge Voltages
Battery Voltages
Charge Stage 12V 24V 36V 48V
Bulk 14.7 V 29.4 V 44.1 V 58.8 V
Absorption 14.7 V 29.4 V 44.1 V 58.8 V
Float 13.6 V 27.2 V 40.8 V 54.6 V
TC Factor: -4mV/°C/cell
Temperature Range Specifications
Condition Recommended Maximum
Storage -15°C to 50°C -40°C to 71°C
Operation -15°C to 40°C -40°C to 71°C
Charge with TC -15°C to 50°C -40°C to 71°C
Charge without TC 0°C to 40°C -15°C to 50°C
Terminal Torque Specifications
Terminal Type ft-lbs in-lbs Nm
AP | DT (AP) | M6 | M6M (stud) | TP07 (AP) | TP08 (AP) 4.2 - 6.2 50-72 5.6 - 7.11
FR45 6.0 - 7.7 70-92 7.9 - 10.3
M8 | LT 7.1 - 8.2 85-97 9.6 - 10.9
DT (stud) | M10M (stud) 9.2 - 10.6 110-127 12.2 - 14.2
  Name Size
Charging Instructions Icon Charging Instructions 1.1 MB
Installation Manual Icon Installation Manual 1.7 MB
Spec-sheet Icon Spec-sheet 1.9 MB
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