SC-C48105-P 48V marine lithium battery, 105Ah

The middle variant and the boats it serves

The SC-C48105-P sits in the middle of the marine drive range: 48V nominal, 105Ah, and 5040Wh. It is the middle row of the table, between the lower-capacity and higher-capacity variants. If your typical run is a few hours of motor assistance, a harbour exit and return, or a day of house loads with a short motor stint, this is the variant to measure against your load profile.

Step up to the largest variant when you want more energy reserve for longer motor stretches or heavier house demand. The company states the marine packs are about 40% lighter than lead-acid, which matters when you are swapping out an old bank and checking trim and handling. The product page states the charge voltage is 54.75V and the standard charge current is 50A, so check that your charger and shore-power setup can work with those figures before you commit.

The pack is LiFePO4. The supplier describes the impedance as ≤80mΩ. Use the figures above to compare against the other rows in the marine drive table, and pick the variant that matches your usual duty cycle rather than the largest bank you can fit.

Discharge headroom for auxiliary drives

The standard discharge for the SC-C48105-P is 210A, which is 2C for this 105Ah pack. That figure is the one to hold against your auxiliary motor load, your harbour manoeuvring, and your house loads running at the same time. A 2C rating means the pack can deliver twice its nominal capacity in amps, so you can stack those loads and still stay inside the standard discharge figure.

For a sailing auxiliary, the motor often runs in short bursts: out of the marina, through a lock, or when the wind drops. Harbour manoeuvring adds another short, high-demand window. House loads — instruments, lights, refrigeration — run alongside. Add the continuous amps of the motor and the house loads, then compare the total with 210A. If your combined figure sits comfortably below it, this variant gives you headroom; if it approaches or exceeds it, look at the higher-capacity rows in the table.

No speed or range figures are stated for this pack. The product page gives the charge voltage as 54.75V and the standard charge current as 50A. Check those against your charger and your motor controller settings before ordering.

Suitability, approvals and ordering

Before you order the SC-C48105-P, confirm the suitability and any classification or approval your application requires. That means checking the exact model against the rules that apply to your boat, your market, and your installation. Ask for the test reports and certificate documents your market requires for the exact model before you order.

Then gather the ordering inputs. First, your motor: make and model, continuous and peak current draw, and the voltage window it expects. Second, your controller: the charge and discharge settings it will apply, and whether those can be matched to the 54.75V charge voltage and the 50A standard charge current. Third, quantity: how many packs you need for the bank size you have calculated. Fourth, destination: the country and port where the packs will be delivered, because the documents your market requires depend on it.

With those four inputs, the supplier can confirm the model and the paperwork. The company profile states the marine packs are about 40% lighter than lead-acid, so include your existing bank weight if you are replacing lead-acid and want to check the difference. The supplier describes the impedance as ≤80mΩ. Use the inquiry form to send your application and model details, and keep the 48V, 105Ah, and 5040Wh figures handy when you compare rows.

Specification summary