|ABSOLUTE CARAVAN CARE
|MRB5246 - EC6884 - EW124745 - MR11711
|Connect With Us...
|Call : (08) 92404552
|units1-4 / 16 Abrams Street.
Balcatta, WA. 6021
|unit 1/16 Abrams Street, Balcatta. WA.
08 9240 4552
MONDAY to FRIDAY - 8.00am to 4.30pm
SATURDAY - CLOSED
MONDAY to FRIDAY - 7.30am - 4.45pm
SATURDAY - CLOSED
Caravan Drop Off - 7.30am - 8.15am
Caravan Pick Up - 3.15pm - 4.45pm
unless prior arrangements made.
AGM, or Absorbed Glass Mat Batteries
AGM batteries differ from flooded lead acid batteries in that the electrolyte is held in the glass mats, unlike the
wet acid which it's freely flooding between the plates. Very thin fibers of Boron-Silicate glass mat are woven
into a mat to increase surface area enough to hold sufficient electrolyte on the cells for their lifetime
AGM batteries have several advantages over both gelled and flooded.
Since all the electrolyte (acid) is contained in the glass mats, they cannot spill, even if broken. This also
means that since they are non-hazardous when charging so they can be installed into just about any location
with creating large modifications for ventilation.
Gelled Electrolyte Batteries
Gelled batteries, or "Gel Cells" contain acid that has been "gelled" by the addition of Silica Gel, turning the
acid into a solid mass that looks like gooey Jelly. The advantage of these batteries is that it is impossible to
spill acid even if they are broken.
However, there are several disadvantages. One is that they must be charged at a slower rate (C/20) to prevent
excess gas from damaging the cells. They cannot be fast charged on a conventional automotive charger or
they may be permanently damaged.
So the main disadvantages of gel cells is that they must be charged at a lower voltage 80% less than flooded
or AGM batteries.
If charged at high values, voids (bubbles) can develop in the gel between the plates which will never heal,
causing a loss in battery capacity.
It is this main reason we don't use CELL batteries, the only exception is when adding addition batteries to
increase capacity to existing battery banks.
We offer great new technology in Deep Cycle Batteries, From the standard Calcium battery suitable for under
bonnet use on your vehicle to the AGM and Lithium used in your RV's we now got a range of affordable
batteries. Below is a run down of what is what and how they are used.
|Wet Cell Batteries
A conventional Wet Cell battery although much cheaper than the other type of Deep Cycle batteries are not really Deep Cycle
batteries, even though they have become widely excepted as this and even though badged Deep Cycle they are nothing more
than a heavier plated verse of the standard vehicles starting battery.
As a consequence of its design, these batteries are built to be maintained at close to full charge by the alternator of a motor
A deep cycle battery is designed to fully recharge from flat with little compromise to its life expectancy. This has to do with the
construction of the plates within the battery itself. On the other hand they have less cranking power than a car battery and may
not be able to start your engine if called upon to do so, but this may result in shortening the life span of the battery as they are not
designed of large current draws.
They are also more expensive than a standard battery, but less than AGM or GEL.
The main issue with both these types of batteries is where to put them? They need external ventilation to expel gases and access
for maintenance. Often you will find RV batteries housed under a bed or seat box, or in a dead spot in the front corner of the
caravan utilising available space and this is not an area suitable for these batteries because of the ventilation needed to the
outside and you will also need to check fluid levels periodically so access must be practical.
Wet Cell batteries fail prematurely because fluid levels have been ignored due to difficult access.
A Sealed Wet Cell Battery still needs to be vented like standard batteries they are just classified as SEALED for low maintenance
reasons, meaning that they have no removable caps to inspect the battery acid, they are not considered sealed like the AGM or
Gell, if you where to tip them over the acid would spill out everywhere, hence they are not SEALED just maintenance free.
|Lithium-ion Phosphate Batteries LiFePO4
Lithium iron Phosphate is far lighter than wet cell, AGM and Gell batteries, when compared to usable amp hour capacity 80% more
efficient and can lasts up to six times as long. The difference comes from lithium's ability to discharge to much further than any
other battery on the market.
A typical AGM battery can only discharge to around 50% is capacity and can only perform to half of a lithium batteries rating.
So this means that a 180A/hr rated Lithium battery is equal to approximately 300A/hr of AGM and of course the Lithiums weight
advantages means 180A/hr cell weighs in around 35kg complete in metal casing where the AGM's weigh around 105-120kg with
mounting boxes etc.
Evolithium Battery Cells
The Evo-180 can sustain 120A charge and 150A discharge rates without breaking a sweat. Since lithium has no absorption stage,
you can charge the battery bank full speed right to the end. This reduces generator run time, increases fuel efficiency (up to 96%
in real-world testing), More importantly, you get to turn the generator off sooner, and keep it off longer. Leave the noise back
Why Lithium-ion Phosphate Batteries?
COST VERSES LIFETIME
With the expected life of 20 years plus and a capacity loss of around 30% at that time frame for the Lithium battery we'll do a
comparison between the AGM and Lithium over a 20 year period, for this exercise we'll give the AGM battery a 6 year life span
which is a well expected time frame. Remember it takes twice the AGM capacity to compare to the Lithium.
180A/hr Evolithium battery cell at 35kg, with built in Victron Battery Management all in contain box.
TOTALLING - $3690.00
360A/hr AGM battery cell 115kg = 3 x 120A/hr - $987.00
20 years divided by 6 years life span = 3.3 time replacement = $3257.10
plus 3 x battery boxes and interconnecting cables = $150.00
plus the Victron Battery Management unit = $279.00
TOTALLING - $3986.10
So a 20 year investment will differ by $3.90 but when you take into the consideration of additional space your AGM batteries took
and the extra weight you had to move we estimate the consumer is about $500.00 better off with the Lithium Cell set-up.
Nominal Capacity - 180Ah
Dimensions WxHxD - 315x220x460mm
Mounted on edge - 205x350x460mm
Weight - 35kg
Life Cycle 70% - >3000
3 year Extended warranty
Nominal Capacity - 360Ah
Dimensions WxHxD - 315x235x725mm
Mounted on edge - 205x350x725mm
Weight - 59kg
Life Cycle 70% - >3000
3 year Extended warranty
|Camec - 120A/H AGM
Nominal Capacity - 120Ah @ 20hr rate
Dimensions: WxHxD - 332x217x172
Weight - 31kg
Life Cycle 50% - >1000
26 months warranty