Sterling Power Battery to Battery Charger 12V Input to 12V Output 70amp DC Powered Charger

Price: £324.99
(as of Jun 19, 2026 01:24:22 UTC – Details)


The Saturn series are Sterling’s latest, most efficient, and most feature-rich models in their long line of battery-to-battery chargers. They also feature some of the highest capacities available in a single unit.
This model features bi-directional charging , designed to keep the start battery fully charged when the house bank has solar or other input. The reverse charging can be up to one-third of the unit’s forward-charging rating. This is great for long-term storage, as well as when there are house loads running off the start battery. Reverse charging is triggered when the house battery is on charge and above the start battery voltage, and can be disabled if desired. It can also be manually triggered in Jump Start Assist mode to provide 20 minutes of charging in the event the start battery has been drained.
Automatic operation is configurable and can be triggered by input voltage, ignition feed, or vibration. An optional remote displays operational status, and allows for setting custom profiles and for limiting output to 65% or 85% of max capacity.
Input Voltage Range: 9V – 16V
Continuous Rated Output Power: ~64A at 14.41V
Operational Temperature: -20°C to 60°C
Cooling Method: Thermostatically Controlled Variable Low-Speed Fan
Dimensions: 200mm x 130mm x 56mm
BUCK BOOST DESIGN – offers high efficiency (95-98%). Because the charger doesn’t waste much energy, it stays remarkably cool even when running at maximum output for hours.
SIMPLE INSTALLATION and setup. Just choose the battery type, and whether you want to trigger the charger from alternator voltage, ignition trigger, or vibration.
BI-DIRECTIONAL CHARGING to keep your start battery topped up. If you have solar panels supporting your house battery, the charger will ensure that your start battery is topped up and ready to go. You can also initiate a “jump start” mode should the start battery become depleted.
CURRENT LIMITING to protect your alternator from damage.
LITHIUM SAFE with two different lithium profiles, plus low temperature trip specifically for lithium ion batteries.
SMART ALTERNATOR/Euro 6+ compatible for Sprinter vans and similar.
IGNITION FEED or VIBRATION SENSE modes can be used for turning the charger on and off, in addition to the default voltage sense mode that works with most vehicles.
6 PRESETS for almost any battery type, and 6 self-recovering protections to keep your system safe.