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FLOODED DEEP CYCLE BATTERY

6 FS 305-SC-N

Series FLA FS SERIES Warranty 1 Year
Volts 6 Design 902
Cells 3 Plates/Cell 19
Terminal Type DT
Included Hardware Stainless Steel K-Lock Nut
Size & Thread 5/16"-18
Charge | Discharge
Charge Voltage Range 2.45-2.5 V/cell @ 25°C (77°F)
Float Voltage Range 2.25 V/cell @ 25°C (77°F)
Recommended Charge Current 45 A
Maximum Charge Current 70 A
Self-Discharge Rate 5%-10% per month at 25°C (77°F)
Capacity
Cold Crank Amps (CCA) 0°F / -18°C 987
Marine Crank Amps (MCA) 32°F / 0°C 1234
Reserve Capacity (RC @ 25A) 697 Minutes
Reserve Capacity (RC @ 75A) 183 Minutes
Capacity Affect by Temperature 40°C
(104°F)
25°C
(77°F)
0°C
(32°F)
-15°C
(5°F)
105% 100% 75% 50%
Hour Rate Capacity / AMP Hour Current / AMPs
@ 100 Hour Rate 461 AH 4.61 A
@ 72 Hour Rate 454 AH 6.30 A
@ 50 Hour Rate 428 AH 8.57 A
@ 20 Hour Rate 360 AH 18.00 A
@ 15 Hour Rate 342 AH 22.80 A
@ 10 Hour Rate 317 AH 31.68 A
@ 8 Hour Rate 310 AH 38.70 A
@ 5 Hour Rate 284 AH 56.88 A
@ 1 Hour Rate 144 AH 144.00 A
Specifications
Weight 46.5 kg 103 lbs
Length 300 mm 11.85"
Width 181 mm 7.13"
Height Incl. Term. 362 mm 14.25"
Product measurements & weights are calculated based on sample data. Individual specifications are subject to vary due to the manufacturing process & battery components.
Electrolyte Reserve 44 mm 1.75"
Container Polypropylene
Cover Polypropylene
Handles None. Optional 305 Battery Sling

Cycle Life vs. Depth of Discharge

Voltage vs. Depth of Discharge

Detailed Illustration

Rev.#3 | June 2026