biscuit wrote:I have set a charger to charge my AGMs at 28.8V for 8 hours before dropping to 26.6V. That is the best I can do with that charger, as it has no option to set a termination current. Otherwise it goes to float at 27.8V after about 3 hours. I do not believe that this is enough time for a good charge.
I could maybe set it to 5 hours, on the basis that the PL8 has been known to take about that time to reach termination current on the old batteries in that chair. But these are not the same batteries, so I made a guess about how long will do.
My question is, if 8 hours is too long, what happens? Does the current simply drop to 0A and stay there? Or will the charger "force-feed" it current in some way? Are there any symptoms to show whether my batteries are suffering?
It has no option to set a float time, though one can set a float voltage.
bulk stage of 29.4V
Fully Automatic Charge Profile
The ProSportHD is designed for all 12 Volt Flooded (Lead-Acid), AGM and Gel batteries.
After completing the installation of your new ProSportHD Charger and with no wiring or connection
errors, the battery(s) connected are greater than 2.5VDC and can accept a charge, the ProSportHD
will sequentially perform the following 5-Stage Digital Performance Charging Process. If your
battery(s) are full, the charger will start maintaining your batteries immediately after it finishes
analyze mode.
5 Stage Performance Charging Overview
Stage 1 - Analyze & System Check OK: During this stage the ProSportHD Mode LED will
pulse blue indicating it is analyzing all battery connections and ensuring each battery is capable
of being charged. When completed successfully, the System Check OK indicator will illuminate
green. This takes approximately 1 minute.
Stage 2 - Charge: During this stage the ProSportHD Mode LED will be solid red and the
ProSportHD will use all of its available charging amps (as controlled by temperature) until the
battery voltage is raised to the selected Battery Types absorption voltage (see page 14).
Stage 3 - Condition: During this stage the ProSportHD Mode LED will be solid amber and
the ProSportHD will hold all batteries at the selected absorption voltage to complete charging
while conditioning each battery connected for up to 3 hours as needed.
Stage 4 - Auto Maintain (Energy Saver Mode): During this stage the ProSportHD’s Mode
indicator will be solid green, indicating it is monitoring and auto maintaining your batteries when
needed to maintain a full state of charge. At this time, the blue Power LED, green System OK
and green Mode LEDs will remain on letting you know your batteries are ready when you are.
Stage 5 - Storage Recondition: During this stage the ProSportHD will enter into its once a month
Storage Recondition mode. The green Mode LED will pulse indicating, while your batteries / boat
are in storage, the ProSportHD is reconditioning all batteries for up to 3 hours once a month to
extend battery life and provide maximum reserve power performance on the water.
Stage 3 - Condition: During this stage the ProSportHD Mode LED will be solid amber and
the ProSportHD will hold all batteries at the selected absorption voltage to complete charging
while conditioning each battery connected for up to 3 hours as needed.
Stage 4 - Auto Maintain (Energy Saver Mode): During this stage the ProSportHD’s Mode
indicator will be solid green, indicating it is monitoring and auto maintaining your batteries when
needed to maintain a full state of charge. At this time, the blue Power LED, green System OK
and green Mode LEDs will remain on letting you know your batteries are ready when you are.
Stage 5 - Storage Recondition: During this stage the ProSportHD will enter into its once a month
Storage Recondition mode. The green Mode LED will pulse indicating, while your batteries / boat
are in storage, the ProSportHD is reconditioning all batteries for up to 3 hours once a month to
extend battery life and provide maximum reserve power performance on the water.
Follow these tips for the longest life:
• Avoid deep discharges.
• Don’t leave a battery at a low stage of charge. Charge a discharged battery as soon as possible.
• Don’t cycle a battery at a low state of charge without regularly recharging fully.*
• Use the highest initial charging current available (up to 30% of the 20-hour capacity per hour) while staying within the proper temperature-compensated voltage range.
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