Subject:Caravan air con.
This is a great tool to use when trying to set up the most efficient panel array, when using a MPPT solar regulator on a caravan or off grid application.
no mobile service available – we will need to run the fridge for 4 to 6 hours to get a proper diagnosis on it.
Suggest you remove the fridge and drop it in to us – this is better as we can hook up our own element and run overnight to establish how well the cooling unit is working (or not working).
If you cant remove the fridge – then you will need to call and make an appointment to bring your van to us.
Fitting of Levelling legs to Iveco motorhome.
This motor-home has a slideout with a 3 way fridge mounted into the actual slideout.
We set the Redfoot Leveling legs so the fridge is completely level.
This is one of the benefits of a system like the Titan Redfoot leveling system. The van once leveled does not sway as you move about the van.
We place the control module near the door so it is easy to step out and set the system to auto-level your motorhome.
The main hydraulic pump system is mounted into a lower locker (on this motorhome we choose to place it in a little used locker under the slide-out).
We mounted the legs quite high to ensure plenty of ground clearance will still providing 5 inches of lift.
We are seeing a few vans coming in to visit with us and noticing they have multiple lithium batteries joined in parallel. We have always avoided this and insist our customers buy the correct size system. But we often lose the sale to someone else due to them offering a “cheap” large capacity system by joining 2 cheap batteries in parallel.
This article explains very well why we dont offer a inferior way of setting up a lithium system. If you are going to spend good money on a very expensive battery system then it should be done properly.
Can I Connect the ePOWER B-TEC Lithium Battery in Series or Parallel
Q1: “Can I connect these in parallel to increase the overall capacity”
Q2: “Can I connect these in series to increase the overall voltage”
A1: When manufactures of lithium cells build batteries, careful consideration is taken to choose matching cells to build the battery pack. The batteries are assembled by the manufacture that is experienced and certified to test and assemble battery packs. The individual cells are tested and sorted by machine so that each ePOWER B-TEC battery pack has matching cells with the same capacity and internal resistance.
Paralleling individual lithium batteries like the ePOWER B-TEC unit is like taking out a lottery ticket. There is a million to one chance that you would end up with two lithium batteries off the shelf at your local retailer with exactly the same capacity & resistance.
When assembling lithium-ion cells into functional battery packs, it is common to connect multiple cells in parallel. When lithium ion battery packs are connected in parallel and cycled, matching of internal resistance is important in ensuring long cycle life of the battery pack. Specifically, a 20% difference in cell internal resistance between two battery packs cycled in parallel can lead to approximately 40% reduction in cycle life when compared to two batteries parallel-connected with the same internal resistance.
Internal resistance mismatch becomes an important problem for applications where the lithium battery packs are paralleled and subjected to high C rates, (i.e. large inverter loads and moderate to high charge rates) and are also required to have a long cycle life.
The detrimental effect of internal resistance mismatch between parallel-connected batteries arises because differences in internal resistance lead to uneven current distribution and capacity between the batteries, resulting in a decrease in battery pack life and performance.
The ePOWER B-TEC batteries internal management system (BMS) monitors and optimize each single prismatic cell within the battery during charge & discharge. However the BMS does not have the ability of making a physical connection to a second BMS system for balancing of the cells between each battery.
A2: In series connected batteries, charging and discharging is inherently limited to the condition of the ‘weakest’ cell. This is particularly so with lithium-iron (LiFePO4) batteries.
A weaker cell would cause an imbalance. A weak cell may not fail immediately but will get exhausted more quickly than the strong ones when under load. On charge, the low cell fills up before the strong ones because there is less to fill and it remains in “over-charge” longer than the others. On discharge, the weak cell empties first and gets hammered by the stronger cells. Cells in multi-packs must be matched, especially when used under heavy loads.
Again, the chances of finding two ePOWER B-TEC batteries off the shelf, with exactly the same individual cell capacity in each battery would be near impossible.
So bottom line;
Can I parallel connect the ePOWER B-TEC lithium batteries?
The short answer is yes. BUT as described above, overall performance of the battery pack and life expectancy will be reduced.
Can I series connect the ePOWER B-TEC lithium batteries?
The short answer is no. Early failure of the battery pack is virtually guaranteed due to the mismatch in cell capacities.
PLEASE NOTE: For absolute maximum performance and lifespan, Enerdrive do not warrant the ePOWER B-TEC product in a parallel or series connection configuration.
If you are requiring a larger battery system than the ePOWER B-TEC battery, please look at the Enerdrive Lithium Power Pack Systems which can offer the level of cell/battery balancing protection.
Can you please tell me if the Waeco cameras are PAL or NTSC video?
They are PAL/NTSC (automatic switching).
Earlier Ultimate brand campers have a 3-way fridge fitted to them as standard.
Unfortunately it gives disappointing performance due to its location and not being a tropically rate fridge.
These are a clever little camper - with a few upgrades an older one is a great buy.
We recommend changing out the RM2350 3 way fridge with a CRX-110 12 volt compressor fridge.
This means an upgrade to the battery storage. We normally fit 2 x 110amp batteries, a decent size 240volt charger and DC/DC charging system to charge the AGM batteries whilst you are driving.
We also usually add in an Anderson connector so you can utilise your portable solar.
Self conversion for Van to motorhome
Customer is doing a self conversion for Van to motorhome.
We fitted 300watts of solar, Battery charger, DC/DC charging system, 2 x 110amp AGM batteries, LED interior lightCRX-110 Waeco fridge, Roof vent and 240 volt inlet and powerpoints.
Ready for the customer to finish off the build.
Diesel heating is considered a very safe method of heating a Caravan or Motorhome.
Below we explain why:
Carbon monoxide poisoning is your main risk of heating in a confined space. Carbon monoxide is a colorless and odorless gas. It forms when a carbon-based substance (coal, LP gas, petrol, diesel etc, hydrocarbon) burns without enough air. The(only minor)indications are: headache, nausea, fatigue, and then unconsciousness. If you sleep, you may never wake up again. Carbon monoxide is rightly called the ‘silent killer’. It also causes brain damage at minor concentrations.
When burning a combustible fuel you are starting primarily with a Hydrocarbon molecule. When you start to burn a Hydrocarbon, Carbon monoxide (CO) is formed, if it carries on burning the CO turns into Carbon Dioxide (CO2). The major way in which combustion can be stopped at that point is through a lack of available oxygen, this also causes unburnt diesel fumes and smoke. Diesels heaters are designed to over supply oxygen (lean burn) under almost all conditions. Thus the CO production is almost nil and any potential smoke is reduced. Having lots of extra air does provide lots of nitrogen and left-over oxygen.
The primary products of diesel fuel combustion are carbon dioxide, nitrogen, heat and water vapour (typically all in the normal air we breathe).
Your second risk is oxygen deprivation. We need about a half a cubic metre of air an hour, of which we convert about 4% into carbon dioxide. If you are in a confined space the exhaled carbon dioxide level rises. As a result, remaining oxygen level falls. It is normally 21%, but symptoms (such as fatigue) set in below 15%. Brain damage consequently occurs shortly after. Oxygen deprivation is serious (or lethal) in poorly ventilated areas.
We use diesel heating in caravans and motor homes specifically to avoid such issues. We draw air from underneath the RV into a tiny furnace, but sealed from the living area. Diesel oil is injected and ignited in this furnace. Air to be heated is blown across the outside of the furnace and ducted to wherever needed. The ‘burnt’ air expels to atmosphere. Burning gas is thus totally sealed from the air heated within the vehicle.
So Diesel heating is considered a very safe method of heating a Caravan or Motorhome. This also explains why there are no requirements for certification of your install. We do recommend you utilise a suitably competent person to carry out your install as we have seen some very poor installations, some even carried out by caravan and motor-home manufacturers.