Recent content by hankins

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    Anyone identify this connector?

    If you have seen the locking bar in place, you will have a good idea of its construction. Fabricating a locking bar from scratch is an option. Looks like components are not crowded which affords a little wiggle room for a clunkier bar. Perhaps cannibalize some springy wire from a non-working...
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    Battery treatment

    I will visit BU looking specifically for How to prolong lithium-based batteries. I think it was at BU where it was mentioned that 86° F was the absolute maximum temperature in regards to a lithium battery. Knowing that terminology is a bit flaky in the world of batteries, I take statements with...
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    Battery treatment

    Alrighty. We are back to sunny skys and slightly longer days. About 10 days ago I charged both battery banks until they were nearly fully charged. It was charged enough to maintain 13 volts at rest. That made a big difference in their ability to reach full charge on these short days. I try to...
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    Battery treatment

  5. H

    Transient voltage suppression

    In an Arduino based pump controller I am using a 30 amp magnetic contactor with a 120 VAC coil. I put 2-10 amp (1N10A10) diodes across the coil in hopes of suppressing high voltage noise at coil shut off. I tied cathode to cathode of the diodes and relied on reverse breakdown voltage to be...
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    HAMs

    Is @bertus still around? I'm looking for instruction on using a pair of HAM capable walkie talkies I have. I believe bertus is an experienced HAM operator.
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    Battery treatment

    My thought is that the chart you posted pertains to using the battery in cycle mode. My use is float mode. The differences were mentioned in the abbreviated manual that came with each battery. I'll dig the manual out and review it. If there are no concrete answers in the manual, I'll contact the...
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    HAM radio operation

    I recently purchased a pair of BAOFENG hand held transceivers. I have watched a half dozen YT videos but still have no idea as how to use my new radios. I am looking for personal tutelage or a site which does an in-depth explanation of my radios and how to use them.
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    Battery treatment

    Using the table you sent as a reference, I do not charge batteries to 100% capacity. I am not clear as to how the Battery Management System (BMS) works, but it does seem to recognize that I am using battery in float mode as opposed to cycle mode. I will use a golf cart as an example of cycle...
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    Battery treatment

    This graph is typical rate of discharge for lifepo4 12 volt battery. My observations are in agreement with the chart. The discharge sweet spot does reside from 12.9V to 12,8V. I have a 5 place LED panel display attached to a bank of 4 lifepo4 batteries. This gives me access to millivolts so I...
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    Battery treatment

    NEXPEAK brand. Product model RJ-C121501A/ NC215. Executive standard T/TCDZ0001-2019
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    Battery treatment

    I am in float mode. The batteries do not necessarily latchup at 13,1 volts but do dwell around that value once reached. In the other mode (cycle mode?) battery is expecting to be charged to max voltage around 14.4 volts. It appears, that much like a lead/acid battery, during a full cycle charge...
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    Battery treatment

    I am using Lifepo4 batteries for power storage from solar panels. My inverters sound an alarm if battery voltage drops below 10 volts. I have been consistently running batteries to a 10 volts level. When alarm sounds, I disconnect the discharged battery bank and connect circuits to a fully...
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