โMay-21-2014 09:00 AM
โMay-30-2014 11:19 AM
โMay-30-2014 11:10 AM
โMay-24-2014 05:53 PM
MEXICOWANDERER wrote:
Try connecting a total of 80 uf RUN capacitors to the power inlet of the MeanWell.
You'll find a great selection of RUN capacitors at
surplussaleales.com
โMay-23-2014 09:24 AM
MEXICOWANDERER wrote:
NinerBikes, observation is right on the money. But the absolute fastest charge protocol is not a 100% of the time regimen. The power supplies can be tweaked with the adjustable potentiometers. I am going to find a savvy tech with excellent vision and rock steady younger hands and replace these pots with 2-watt 3 turn 2K pots that have shafts that can have a knob with pointer screwed on.
Scenario
Hotel room. BiPAP and LED reading light. Battery. Lights go out for 4 hours at night. Charger will be plugged in, maintenance charge going. Lights come back on for a hour or so. Power supplies are set at full acceptance voltage but rational for the circumstances 14.4 volts. The timer has to be cranked to 12-hours, I think I can remember to do that before switching off the reading light. The BiPAP draws more then 4 amperes, the reading light an amp or two. The Fantastic Fan around three amperes.
14.4 volts is RV alternator charging regulator set point. If you have an issue with a 14.4 volt setting go argue with your motorhome or tow pickup's charging system.
A higher than 14.4 volt setting is for TOP CHARGING. This is where the 2 ampere 3 turn pots come in.
Remember and this is IMPORTANT.........With a power supply, you set the VOLTAGE without being connected to a battery. With built-in gauges, this takes what (?) 2.7 seconds?
They make current limiting modules that re adjustable. They cannot handle a lot of current, but they can handle ENOUGH amperage to satisfy equalization. Constant current until three or four tenths less than 16.0 volts. Then current tapers down because charge acceptance become very limited. Natural electro-chemical reaction.
This unit MAY penalize battery life by 5% or most probably <5%
Most of the Mexican fishermen go out at night and use 50W incandescent lighting. Their 20-minute run back to the beach does not recharge their group 27 battery. Jesus is going to charge them 30 pesos, and it's a 100 meter walk from their lancha to the enramada. 300 pesos a day is better than a kick in the butt.
โMay-23-2014 08:56 AM
โMay-23-2014 01:18 AM
niner bikes wrote:
The adjustment on the pot with a phillips is kind of touchy and sensitive
โMay-22-2014 06:34 PM
BFL13 wrote:
Don't need any lessons in how to reduce gen time by using an higher charging rate--see my ugly graph how that works in real life. Meanwhile---
I still don't understand how you can equalize at a constant amps at a constant voltage like I think was claimed.
When the batts are full and you then do your overcharge, with my charger at constant 15.7v, the amps still taper. How the heck can you keep the amps at say 5 amps at 15.5 volts????
When Mex says "max acceptance rate" at whatever voltage they are held at, to me that means the max acceptance rate tapers as battery SOC rises. SOC rises even higher than 'so-called' "full" because you are doing an overcharge. Maybe all the extra goes off as heat so the amps stay the same? I have no idea. My charger when doing an "equalize" at constant 15.7 volts gets it done but amps taper down to nothing during that time.
Does this gizmo Mex is building not have the amps tapering? How can that happen?
โMay-22-2014 06:32 PM
BFL13 wrote:He is using a buck and a boost transformer with regulation circuits. The Ammo Can differs from a conventional charger because the voltage and amperage can be set at a particular level and it holds that setting. He has three settings if I understand the design correctly.
Does this gizmo Mex is building not have the amps tapering? How can that happen?
โMay-22-2014 05:44 PM
โMay-22-2014 04:07 PM
โMay-22-2014 01:13 PM
โMay-22-2014 12:39 PM
โMay-22-2014 11:30 AM
โMay-22-2014 10:36 AM
NinerBikes wrote:
Why is it that 120V shocks you, but 12V doesn't? Resistance of your skin? Not enough volts = not enough pressure to penetrate your skin or enough for your skin to be conductive?