Rolls 6V 445Ah L16 Battery: Dependable Power for Years
Why You'll Love The Rolls 6V 445Ah L16 Battery
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Serious capacity for a serious bank. 445Ah at the 20-hour rate — and 512Ah at the 100-hour rate — gives you a deep reservoir of usable energy, enough to carry a cabin or home right through the night.
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Built to be cycled hard, for years. Seventeen thick plates per cell and Rolls' Series 4000 construction are made for daily deep discharge, which is why these banks tend to be measured in years rather than seasons.
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Less upkeep than you'd expect from a flooded battery. A generous 2.25" electrolyte reserve above the plates means longer gaps between watering, so maintenance stays a small job rather than a constant chore.
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Honest value per kilowatt-hour. Flooded lead-acid is still the most cost-effective way to build large storage upfront, so your budget buys noticeably more usable capacity.
Your life, with the Rolls 6V 445Ah L16 Battery
Building an off-grid bank is a long-term decision. You're not buying a gadget for this season — you're buying the thing that quietly keeps your lights on for years to come.
That's the job the Rolls 6V 445Ah L16 Battery was built for. Wire eight together into a 48V bank and you have a deep well of power that your panels refill each day, carrying your cabin or home through the evening and through a long run of grey weather.
It is a flooded battery, so it does ask a little of you — a look at the levels and a top-up now and then. In return you get a proven workhorse, thick plates built for repeated deep cycling, and an electrolyte reserve generous enough to keep those top-ups infrequent.
The details are where Rolls earns its reputation.
Each cell carries 17 plates, and the Series 4000 design is certified to IEC 61427-1, the international standard for renewable energy storage. Charging is refreshingly straightforward: 2.45–2.50 V/cell to charge, 2.25 V/cell to float, with up to 85A of charge current if your system can deliver it.
The high-density polypropylene case and cover are impact-rated, the vent caps carry integral flame arrestors, and rope handles make a 122.5 lb battery far easier to position. Self-discharge sits at just 5–10% per month, so a resting bank holds its charge well.
The Rolls 6V 445Ah L16 Battery in a nutshell:
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445Ah at C20, 512Ah at C100 — deep, usable storage for off-grid solar, cabin and backup banks.
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17 plates per cell — thick-plate Series 4000 construction built for repeated deep discharge.
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2.25" electrolyte reserve — longer intervals between watering and less routine upkeep.
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Flexible bank building — wire two, four or eight in series for 12V, 24V or 48V systems.
Rolls 6V 445Ah L16 Battery specifications
Series & Type
FLA Series 4000 — flooded lead-acid deep cycle
Nominal Voltage
6V
Design / Group
L16
Cells / Plates per Cell
3 cells / 17 plates per cell
Capacity by Hour Rate
- 100 hr: 512 Ah (5.12 A)
- 72 hr: 498 Ah (6.92 A)
- 50 hr: 481 Ah (9.61 A)
- 20 hr: 445 Ah (22.25 A)
- 15 hr: 418 Ah (27.89 A)
- 10 hr: 401 Ah (40.05 A)
- 8 hr: 383 Ah (47.84 A)
- 5 hr: 356 Ah (71.20 A)
- 1 hr: 209 Ah (209.15 A)
Reserve Capacity
861 minutes @ 25A / 226 minutes @ 75A
Cold Crank Amps (CCA)
1040 A at 0°F / -18°C
Marine Crank Amps (MCA)
1299 A at 32°F / 0°C
Charge Voltage Range
2.45–2.5 V/cell @ 25°C (77°F)
Float Voltage Range
2.25 V/cell @ 25°C (77°F)
Charge Current
50 A recommended / 85 A maximum
Self-Discharge Rate
5%–10% per month at 25°C (77°F)
Capacity Affected by Temperature
105% at 40°C (104°F) / 100% at 25°C (77°F) / 75% at 0°C (32°F) / 50% at -15°C (5°F)
Terminal Type
LT, 5/16"-18 — includes S/S hex cap screw, nut, lock & flat washer
Cables
Optional 19" 4/0 interconnect cable
Electrolyte Reserve
57 mm / 2.25"
Container & Cover
High-density polypropylene, UL94 HB (UL94-V2 available), impact copolymer rated to ASTM D256 and D5420
Venting
Vented design with integral flame arrestor vent caps
Handles
Rope / plastic handle
Weight
55.5 kg / 122.5 lbs
Dimensions
Length 318 mm / 12.5" — Width 181 mm / 7.13" — Height incl. terminal 425.5 mm / 16.75"
Warranty
3 years
Let the experts help you find your perfect deep cycle battery
Not sure how many Rolls 6V 445Ah L16 batteries your system needs, or how to wire them for 12V, 24V or 48V? We're here to help you size your bank properly the first time.
Chat via Email — support@kratopower.com
Chat on the Phone — +1 (888) 855-7286
Rolls 6V 445Ah L16 Battery documents and materials
Disclaimer: The information on this page is provided for general guidance only and should not be taken as professional, electrical or medical advice. The Rolls 6V 445Ah L16 Battery is a vented flooded lead-acid battery weighing 122.5 lbs. It contains sulfuric acid, can release hydrogen gas during charging, and must be installed in a suitably ventilated space, watered with distilled water and charged strictly in line with the manufacturer's user manual and your local codes. Always use appropriate lifting equipment and personal protective equipment, and consult a qualified electrician if you are unsure. Every situation is different, so if you have any doubt, please seek professional guidance before purchasing or installing. Products are used at your own risk.
