Rasmus Marine jump starters

This is where you will find Rasmus Marine portable jump starters from the PFP series, plus the accessories that go with them. They start an engine whose battery will not respond, afloat or ashore.

Before you pick one, check your system voltage and engine size: those two figures separate one model from another.

Choosing a Rasmus Marine jump starter

The choice comes down to a few technical criteria. For background on the brand, visit the RASMUS MARINE page.

• Voltage: almost all cars, large motorbikes and leisure boats run at 12 V; trucks and some workboats run at 24 V. The unit must match your system.
• Cranking current: the bigger the engine, and especially if it is a diesel, the more amps it needs at the first turn. Leave some headroom, particularly if you sail in cold weather.
• Accessories: check on the product page which accessory belongs to which starter before adding it to your basket.
• Storage on board: keep it somewhere dry, away from spray and strong heat; salty humidity does no electronic device any favours.

Jump starter or new battery?

A jump starter solves the moment, but if the battery lets you down again and again, the battery is the problem. For your boat we also sell marine batteries, and if you want a single battery that both cranks and powers the onboard loads, look at our dual purpose batteries. Keeping it topped up with a good battery charger saves a lot of emergency starts.

Frequently asked questions

Does a jump starter charge the battery?

Not fully. It supplies the starting current; recharging is then done by the alternator or a charger.

How often should I recharge the jump starter?

Its internal battery slowly loses charge even when unused. Recharge it after every use and check it before the season starts.

What if I connect the clamps the wrong way round?

Disconnect at once. Red clamp to positive, black to negative or chassis ground, and see the product page for the protections the model includes.