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FLOODED DEEP CYCLE BATTERY

6 FS 305-HC-N

Series FLA FS SERIES Warranty 1 Year
Volts 6 Design 902
Cells 3 Plates/Cell 17
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 40 A
Maximum Charge Current 65 A
Self-Discharge Rate 5%-10% per month at 25°C (77°F)
Capacity
Cold Crank Amps (CCA) 0°F / -18°C 878
Marine Crank Amps (MCA) 32°F / 0°C 1097
Reserve Capacity (RC @ 25A) 619 Minutes
Reserve Capacity (RC @ 75A) 163 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 410 AH 4.10 A
@ 72 Hour Rate 403 AH 5.60 A
@ 50 Hour Rate 381 AH 7.62 A
@ 20 Hour Rate 320 AH 16.00 A
@ 15 Hour Rate 304 AH 20.27 A
@ 10 Hour Rate 282 AH 28.16 A
@ 8 Hour Rate 275 AH 34.4 A
@ 5 Hour Rate 253 AH 50.56 A
@ 1 Hour Rate 128 AH 128.00 A
Specifications
Weight 44 kg 97 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