12V Guru – add a 2nd caravan battery pack

12V Guru – add a 2nd caravan battery pack

Question to a 12V Guru

Maybe one item that your particular guru may love to deal with is the addition of a caravan that is second to a preexisting caravan 12V system that presently only has one home battery pack. Just What shall we give consideration to whenever evaluating the ability to accept the battery that is additional seeking the new battery, as well as the fitting and wiring? For guide caravan, may a Jayco is suggested by me Silverline?

All the best, Bob Murray

12V Guru answers

Many thanks for your concern. Numerous RVers find one battery is not enough to service their needs, particularly on a van such as for example a Silverline where there are numerous devices.

Get in on the batteries in parallel

To own a two battery pack set-up, you need to join the batteries in ‘parallel’ in which the terminals that are positive ferzu connected together basically because of the negative. Use thick cable such as 8.4mm2 (AWG 8) and quality battery pack lugs. a synchronous setup increases the ability of one’s system in Amps and maintains the nominal voltage at 12V DC, that is exactly what your van needs. Therefore, two 12V batteries that are 100Ah this way gives you 200Ah ability at 12V.

Maximise the worthiness of the large system

To maximise the worth whenever installing a bigger system, make sure you have actually two batteries for the chemistry that is same age and also make. Different battery chemistries such as for instance AGM, gel, calcium have different charging voltage needs and you also would not obtain the two batteries correctly charged to do something as you. Likewise, a deep period battery in synchronous with a beginner (cranking) battery pack are affected as there are construction differences internally during these batteries.

Batteries naturally degrade in the long run and their capability decreases, so a mature battery with a brand new one will perhaps not offer performance that is optimum. Aligning these facets will enable the battery pack to use as you large bank along with cells within the same condition.

Failing that, an unbalanced battery pack bank can cause the batteries or their interior cells to not ever get a much number of the existing as a result of different interior opposition, which leads to different parts of battery pack bank receiving various amounts of present. For instance, a bank composed of a three-year-old battery degraded with age and brand new a battery won’t fee evenly throughout the different phases of asking. And so the state of charge (SOC) will be different regardless of if the brand new battery pack is exactly the same brand and chemistry.

Therefore in a nutshell, to update your battery pack system to a higher capacity that is amp would be most useful to purchase 2 to 3 new batteries of the identical brand name and chemistry, make use of the more substantial quality cable, fuse appropriately and make sure your charger is capable of meeting the needs you have. To make sure your brand-new battery pack bank will be with the capacity of being fully charged think about a DC-DC charger or even the addition of the solar setup.

Lithium setup option

Needless to say, often there is the choice of updating one’s body towards the latest Lithium setup Jayco has simply released, which will signify with only 1 battery pack you could have twice as much Amp capacity, longer life, fewer than half the extra weight and a smaller billing time—but it comes down at a high price!

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