Worried About Your Batteries Self-Discharging?
We often get asked by our customers for a way that a starter battery can be kept topped up when leaving a vehicle for a long period of time. One of the easiest solutions is to use a Sterling Battery to Battery Maintainer which is a simple, low cost device which will prevent your batteries from self-discharging and becoming damaged.
The Maintainer works by allowing some of the current (3A max.) supplied to a leisure battery by solar, mains, wind etc to be diverted to a second battery and it keep maintained. It can also be used between a combination of different battery types for example, if you have a lead acid starter battery and a lithium leisure battery, this will be fine to use. It has various safety features built in such as protection against over voltage, over temperature and reverse-polarity protection. The unit is also IP65 rated and ignition-protected so it is suitable for use in even the harshest of conditions.
This is the most popular trickle charger in our range and it is designed to prevent against self discharge of a battery but it is not intended to be used to ‘bulk’ charge a heavily depleted battery (the unit does not have multi-stage charger capability due to the limited current it can produce). This unit works in the same way that other trickle chargers that we stock work in that it will activate once it sees a charging voltage above 13.3V on a battery and deactivate when that voltage is below 12.8V. The device is intended to be fairly simple to install, it is just fitted in-line between the positive terminals of the two batteries with 10A fuses. It also requires a negative connection that must be ‘common’ with both batteries.
For more information on this product, click here where we have the specifications, instruction manual and wiring diagrams for the Battery Maintainer.
I hope this article was helpful and if you have any questions regarding this, get in touch with us at sales@12voltplanet.co.uk and we will be happy to help.
I cannot see how this Sterling unit will prevent self discharge of a single battery although I can see it will protect one sick battery from the rest of the batteries on a boat, but then so would a VSR.
Just to confirm that the Sterling battery to battery maintainer works really well. Have campervan which has a solar panel and LiFos leisure battery, and a van storage cover with a clear panel for the solar. Fitted the maintainer just under a year ago and when not being used have not had to plug the van into the mains supply since then. Vehicle battery always fully charged and ready to go. As long as there is sufficent sun and charge in the leisure battery the vehicle is 'self sufficient'!!