Frequently Asked Questions

Which is better for marine batteries — the SC1353 or the SC1364?

For marine use, I’d pick the SC1353 every time. It delivers 200-amp engine start and 40-amp boost compared to the SC1364’s 150-amp start and 20-amp boost, and that extra power makes a real difference when you’re trying to crank a cold marine engine. The SC1353 also supports both 6V and 12V batteries, which is handy if you have an older boat with a 6V system or a mix of equipment. If you only have a standard 12V marine battery and want to save some money, the SC1364 will still get the job done for most smaller boats.

Is the SC1353 worth the extra money over the SC1364?

In my opinion, yes — especially if you need the extra starting power. You’re getting 50 more amps of engine start (200A vs 150A) and double the boost charge (40A vs 20A), which is a meaningful upgrade for larger engines or deeply discharged batteries. The SC1353 also adds 6V support and a built-in battery and alternator tester that the SC1364 doesn’t have. If your battery needs are modest and you only work with 12V systems, the SC1364 is a solid value, but the SC1353 gives you more capability for not much more.

Can both chargers handle AGM and deep-cycle marine batteries?

Yes, both the SC1353 and SC1364 work with standard, AGM, and deep-cycle battery types, so you’re covered for most marine battery setups. They both include a desulfation mode that helps recondition older batteries and extend their life, which I’ve found works well on deep-cycle batteries that have been sitting all winter. The SC1353 has the edge here because it also supports 6V deep-cycle batteries, while the SC1364 is limited to 12V only.

Which charger has better build quality — SC1353 or SC1364?

Both are built with sturdy steel cases, but the SC1364 has a slight advantage in portability with its retractable handle and compact wheels that make it easier to roll around. The SC1353 is heavier at 28 pounds compared to the SC1364’s roughly 26-pound weight, but it feels just as solid. I’d say the SC1364 is better designed for moving around a garage or dock, while the SC1353 feels more substantial for stationary heavy-duty use.

Can the SC1364 charge a 6V battery?

No, the SC1364 only supports 12V batteries, so you can’t use it on any 6V systems. If you need to charge both 6V and 12V batteries — like if you have an older boat with a 6V electrical system plus a modern car — you’ll need the SC1353, which handles both voltages. This is one of the biggest reasons I recommend the SC1353 for marine use if you have any older equipment.

How long does it take to charge a dead marine battery with these chargers?

That depends on the battery size and how dead it is, but with the 6-amp charge mode, both chargers will take around 10 hours for a typical marine battery from empty to full. The big difference is the boost mode — the SC1353’s 40-amp boost will get you back on the water much faster than the SC1364’s 20-amp boost. For a quick start when you’re stranded, the 200-amp engine start on the SC1353 will crank most marine engines almost instantly, while the SC1364’s 150-amp start is still strong but might struggle with a really big block.