Why is my split charge relay clicking?

Why is my split charge relay clicking?

s, it sounds like the relay is probably trying to close (thus combining your start and leisure batteries) while the MPPT is charging your leisure battery. This would typically be due to the relay’s voltage trigger being reached – thus why it stops when you apply a load to the leisure battery.

How does a split charge system work?

VOLTAGE SENSITIVE RELAY SPLIT CHARGE KITS. Installing a voltage sensitive relay split charge kit is the best solution for cars with traditional charging systems. This set up does not require wiring to the vehicle’s alternator or electrical wiring system making it a simpler installation.

How do I know if my split charge relay is working?

If you haven’t got a meter, you could disconnect the leisure battery live terminal (Or remove the inline fuse) and use a 12v bulb to test for current from the relay. With the engine off, the relay should be off and there should be no light. With the engine on on and the relay working, there should be light.

What size fuse do I need for split charging?

I would recommend: Run big cable between the main battery and leisure battery, with the split charge relay contacts in the circuit, and a big fuse at each end (by big cable I mean 25mm2 (or about 8mm diameter) and a big fuse (60A or so).

Does a VSR work both ways?

A VSR (voltage sensitive relay) is perfect for dual battery systems. They come in a single sense or a dual sense configuration for bi-directional charging.

Can a car alternator charge two batteries?

You can run two batteries on the same alternator. The alternator registers these two batteries as a single large battery and charges them the same. The batteries self-regulate the amount of current they take as they charge. This means that a single alternator is effective for multiple batteries.

Why is my leisure battery not holding charge?

The main causes of battery drain is a faulty leisure battery. The battery may be old, cold or just need to be replaced. A faulty piece of equipment such as the charger or anything connected to the leisure battery could cause a drain.

What size cable do I need for a split charge relay?

16sqmm
To fit a split charge relay, first connect a 16sqmm red cable from the positive terminals of each battery bank to the large studs on the relay labelled ’87’ and ’30’. Ensure this cable is thick enough to carry the maximum charging current of your alternator.