More on battery management
I don't know about you guys but my truck sits for days and even weeks, and in this cold weather of Kanukistan, the batteries take it in you know where. This is much more evident with diesel motors as the glow plugs take a ton of juice to heat up and especially when you cycle them like you do in the winter, sometimes up to 5 times just to get them to sty hot while you start the engine. So when I go to start NOMAD, more times than not the batteries have pretty much had it. Thank God I got the deep cycle ones as they can take this up and down in charging, as they were made for this. So, I needed to get a charger I could leave on all the time without increasing my electrical bill too much and this is through summer and winter when between trips.
Recently (I got it today and installed it) I ordered a Soneil 2404S (
http://soneil.com/24_volt.html) trickle charger made in Kanukistan. Those Kanukistani are so smart with gadgets like the Ozzies...must a colonial thing. Soneil also makes them for 12V systems (
http://soneil.com/12_volt.html).
A very clever little charger which fits between or beside the batteries and the fender and hooks on to my 2 x 12 V Optima Blue tops in series and keeps them in top shape. They are vedry small and very light weight and are suitable for Gel, Sealed & Wet Lead Acid Batteries as well. The one I got is 2 Amp constant voltage, automatic cut-off and then true float and can be left connected indefinitely without harming the battery, just don't forget to unhook it form the AC poser before you drive away! It also takes care of de-sulfation of the battery and increases battery life. Pretty kool, huh!
Most of the battery chargers use linear technology, which convert the 115VAC to 24 VDC at 60 Hz. This requires a large transformer, which has the disadvantage of lower efficiency resulting in higher heat generation, larger size and weight. Soneil's Battery Charger transforms the 115 VAC into 24 VDC at about 100,000 Hz (1667 times faster than conventional charger), which requires a much smaller transformer and this results in a unit of smaller size, low weight and improved efficiency. The 2404S uses sophisticated electronic circuitry with microchips. All present day computers use switch-mode technology.
Stage 1: Deep Discharge Charging Pulse Mode: LED Flash. The charger starts charging at 0.5V and give pulse current up to 5V. This has effect of removing loose sulphation formed during deep discharge state of the battery.
Stage 2: Constant Current Mode (CC): LED Yellow. The charger changes to constant current 2A. When the battery voltage reaches up to 28.8V, the charging stage changes from CC (Constant Current) to CV
(Constant Voltage) mode.
Stage 3: Constant Voltage Mode (CV): LED Yellow. The charger holds the battery at 28.8V and the current slowly reduces. When the current reaches at 0.5CC (CC=Constant Current), this point called the Switching Point. The Switching Point is one of the great feature of this battery charger that it can adjust the current automatically according to battery capacity. Other chargers are not capable to adjust the current automatically.
Stage 4: Standby Voltage Mode: LED Green. The charger maintains the battery voltage at 27.6V and current slowly reduces to zero. Charger can be left connected indefinitely without harming the battery.
Recharging: LED Yellow. If the battery voltage drops down to 27.6V, the charger changes from any mode to Constant Current mode and restart charging. The charging cycle will go through Stage 2 to Stage 4.
Protection:
a) Reverse polarity protection - provided
b) Short circuit protection - provided
c) Over-Voltage Protection - provided
d) Over current protection - provided
e) AC Surge Protection - provided
f) Soft start and stop: Starts and stops gradually
No sudden in-rush of current. This protects both the batteries and any other circuits connected to the charger.
The charger does not generate excessive radiated or conducted emissions. No
interference with TV, radio, computer or other equipment.
Size: Length - 4.3" (110 mm), Width - 2.4" ( 60 mm), Height - 1.2" ( 30 mm) and Weight: 14 Oz (400 grams)