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11-06-2017, 07:19 AM | #1 |
Gone Wild
Join Date: Dec 2011
Location: Jacksonville Beach, FL
Posts: 606
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Battery problems Trojan Ranger 160
I have a dpi accusers charger and ranger 160 8v. Batteries. Six in an Exgo txt 2007. I have found water below the plates. I filled to just above plates sat put on charge till the cycle ended at 2 amps. Filled to normal 1/4" below plate. Took a 10 mile ride sunday and put back on charge and they have been on charge 14 hours now reading at 5 amps this monday am. Some overflow has happened, just small amount tops of batts.
Is this normal. Batteries are 10 months old. Another set failed last year. Same batteries. I had t875 before and no problems. I am meticulous and check battery every month. Could the charger be charging too long in bulk charge. My battery guy says no. I'm thinking of getting a new board. My readings with hydrometer before charge were decent 1275-1300. One last thing. Ranger 160 have a lot less space at top of battery then other 8 volt batteries. Any ideas would be great help. Sent from my SM-T710 using Tapatalk |
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11-06-2017, 02:15 PM | #2 |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: Battery problems Trojan Ranger 160
Perhaps a dumb question, but has to be asked. Is DPI Accusense charger set to Trojan battery (Mode-2)?
If not, the batteries are being overcharged. (Mode-2 is the mildest charging algorithm) The slight overflow indicates the cells were slightly overfilled, or weren't fully charged when topped up. If overflowing is a repeating issue, don't fill as full, maybe 3/8" below bottom of vent tube rather than 1/4". Not counting Pre-qualification and Float, the DPI Accusense is a 3-stage charger. Those being: Bulk, Absorption and Finish. NOTE: Following is for Mode-2 and a 48V pack Bulk charge is a constant current stage (about 17A), starting at whatever voltage the battery pack is at when charger is connected and transitions into the Absorption stage when on-charge voltage climbs to about 56.4V. Absorption charge is a constant voltage stage and roughly 56.4V is applied while the Amps are allowed to decrease. When the battery is at 80% to 90% of full charge, the charger transitions into the Finish stage. (I'm not sure how the charge makes that determination, could be the rate at which the Amps are decreasing, or could be a hard set-point, or something else, but whatever it is that is when it goes to next stage) Finish stage is also a constant current stage. Whatever current was flowing at the end of the Absorption stage is maintained and the on-charge voltage is allowed to climb. When the on-charge voltage stops climbing, the battery is fully charged. (More correctly, when the rate of voltage increase drops below a predetermined rate. Trojan doesn't publish that information, but US Battery uses 4mv/cell per hour and Trojan is probably similar) ---------- There really isn't a time limit on how long Bulk charge lasts. It lasts as long as it takes for the on-charge voltage to reach 56.4V. However, if the charge continues to put out max amps after reach that voltage, something is wrong. ---------- Contact DPI for better testing info. |
11-06-2017, 04:16 PM | #3 | |
Gone Wild
Join Date: Dec 2011
Location: Jacksonville Beach, FL
Posts: 606
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Re: Battery problems Trojan Ranger 160
Quote:
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11-07-2017, 12:13 PM | #4 | |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: Battery problems Trojan Ranger 160
Quote:
Sounds like charger is transitioning out of Bulk charge. (Amps decreasing from 17A) Question is at what voltage? What is the pack voltage when the amps are decreasing? |
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11-07-2017, 08:31 PM | #5 |
Not Yet Wild
Join Date: Oct 2017
Location: Bandera tx
Posts: 40
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Re: Battery problems Trojan Ranger 160
I've got the same batteries and the same charger. I haven't had any problems ? ? I just plugged mine in right out of the box ! It is set to mode 2 I just checked it
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11-07-2017, 10:13 PM | #6 | |
Gone Wild
Join Date: Dec 2011
Location: Jacksonville Beach, FL
Posts: 606
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Re: Battery problems Trojan Ranger 160
Quote:
Sent from my SM-T710 using Tapatalk |
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11-10-2017, 09:30 PM | #7 |
Gone Wild
Join Date: Dec 2011
Location: Jacksonville Beach, FL
Posts: 606
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Re: Battery problems Trojan Ranger 160
After 3 days, two complete load test discharge. My cart shop says batteries are good, but do take 12hrs. To charge. I'm having board replaced on my DPI accusense and keep and eye on things.
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11-11-2017, 01:44 PM | #8 |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: Battery problems Trojan Ranger 160
What SoC do you typically discharge your batteries to?
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11-11-2017, 03:05 PM | #9 |
Gone Wild
Join Date: Dec 2011
Location: Jacksonville Beach, FL
Posts: 606
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Re: Battery problems Trojan Ranger 160
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11-11-2017, 03:07 PM | #10 | |
Gone Wild
Join Date: Dec 2011
Location: Jacksonville Beach, FL
Posts: 606
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Re: Battery problems Trojan Ranger 160
Quote:
Sent from my SM-G920T using Tapatalk |
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