Nov-16-2019 06:17 AM
Nov-17-2019 08:43 AM
MDKMDK wrote:
What about LiFePO4 banks? Can't assume everyone is using FLA or AGMs any more.
Nov-17-2019 08:26 AM
Harvey51 wrote:
I don’t find it complicated or in need of micromanagement. I charged it fully, set the amp hour capacity and 100% charge on the monitor when I first installed it. The solar charge controller keeps on charging slowly after the monitor reads 100% but the monitor doesn’t go beyond 100%. It has recalibrated itself so 100% means charging has replaced all the amp hours used since it was last fully charged. No adjusting ever. No doubt it is getting less accurate as the battery capacity diminishes but I always know when I’ve got a full charge. ( snipped para 2)
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Nov-17-2019 08:17 AM
Vintage465 wrote:RLS7201 wrote:
A shunt is just another device to get corroded and cause a bad connections.
Meters with hall effect sensors are the way to go for monitoring batteries now days.
All the goodies
Richard
So, with one of these, does the sensor need to go near or at the battery? I suppose if there was an online manual I could get all this info. Thinking that the Victron and the Morning Star are the "standards" for reliability and accuracy, how do these measure up? I like the idea of not needing to cut a shunt in but that's not really a deal breaker in my book. Most of my blanks in my mind are the location of sensors, the location of the read out, and what connects them together. It looks like the base station and the sensor goes near or at the battery and the read out goes........wherever?
Nov-17-2019 08:00 AM
Nov-17-2019 07:17 AM
Itinerant1 wrote:
No fancy graphs.
Itinerant1 wrote:
Nice thing about lfp no need to fully charge unless you think it's needed.
Nov-17-2019 07:15 AM
Nov-17-2019 06:57 AM
BFL13 wrote:
Not a clue about Li batt charging profiles. I ASSume they are like other batts where once their Vabs is reached and held there by the charger, that amps will have to taper as SOC rises.
Perhaps one of our members here with Li batts and nothing better to do, can make us an ugly graph like this, only using Li batts. (Or not so ugly if he is a computer whiz)
Nov-17-2019 06:53 AM
BFL13 wrote:
Not a clue about Li batt charging profiles. I ASSume they are like other batts where once their Vabs is reached and held there by the charger, that amps will have to taper as SOC rises.
BFL13 wrote:
Perhaps one of our members here with Li batts and nothing better to do, can make us an ugly graph like this, only using Li batts. (Or not so ugly if he is a computer whiz)
Nov-17-2019 06:21 AM
RLS7201 wrote:
A shunt is just another device to get corroded and cause a bad connections.
Meters with hall effect sensors are the way to go for monitoring batteries now days.
All the goodies
Richard
Nov-17-2019 06:14 AM
Nov-17-2019 05:31 AM
Nov-17-2019 04:18 AM
BFL13 wrote:
"When the amps start tapering down, you are getting closer to fully charged. "
With solar and its typically low charging rate (under 10%) you can be in the 90+ percent SOC zone, but with a better charging rate you will not be close. Even so it takes a long time to get from 90 to 100.
EG, at the 20% charging rate specified for the Bulk stage with AGMs amps will start to taper at about 75% SOC--a long way from being fully charged.
Nov-16-2019 09:05 PM
Nov-16-2019 08:22 PM
time2roll wrote:
If my voltmeter shows 14.5+ volts at some point in the day I know I have enough charge to get through the evening meal, tv, charge small items and run the furnace.
Nov-16-2019 08:19 PM