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  1. B

    Diagnosis help please ( recent change to very poor mileage per charge)

    I used my spare battery yesterday down to about 30% then charged it to 100%. It sat for 12 hours and voltage had reduced to 53.8 on meter. I just topped it up to 100% and will do my regular route once or twice and recheck.
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    Diagnosis help please ( recent change to very poor mileage per charge)

    I'm using a meter for voltage and the bike display for % full. I will take the batteries down to 20% to see voltage there. I've only once ridden to shutoff and did not meter test then.
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    Diagnosis help please ( recent change to very poor mileage per charge)

    To compare with the spare battery, which is almost unused, the meter says 50.3 volts for the spare when at 50% on the bike display. Travel was 14.5 miles. So the 2 batteries are close at that point. The particular low output the LG M36 batteries do attain a high number of recharges in their...
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    Diagnosis help please ( recent change to very poor mileage per charge)

    Would the voltage reading when charger shuts off (slightly more than 54 V) indicate that it does sense what the battery is?
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    Diagnosis help please ( recent change to very poor mileage per charge)

    Thank you! The heading on that setting on my bike display says "BV" and the number is 52. Your guess seems to be correct. I have no idea about the controller, never even seen it, it's in the downtube.
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    Diagnosis help please ( recent change to very poor mileage per charge)

    From the instruction manual, there is nothing about a voltage display, only the 5 bar graph. But now that you mention it, I think I found a voltage reading or setting they didn't tell us about. The manual says the other settings are presets only. That setting says "52". It does not change with...
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    Diagnosis help please ( recent change to very poor mileage per charge)

    The battery is 13s 5p using LG M36 cells
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    Diagnosis help please ( recent change to very poor mileage per charge)

    Reading 48% on bike screen meter says 50.2 volts, 16.5 miles Later on, reading 34% meter says 49.1 volts 20.5 miles. On the last trip I rode harder and used the throttle more. Weather and wind conditions the same as the previous trip.
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    Diagnosis help please ( recent change to very poor mileage per charge)

    I rode 2.2 mi, with one small hill involved, as usual. Temperature is 43F. Wind 4mph. Now reading 88% on the bike screen, and that will probably rebound to 89%. Showing 53.2 V on the meter. Rebounded to 89% still showing 53.2V on meter I'll report the V when bike screen is reading 50%, then 20%...
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    Diagnosis help please ( recent change to very poor mileage per charge)

    After letting the battery sit for 1/2 hr or so, the meter reads voltage as between 54.0 and 54.1. That is usual for the battery to do.
  11. B

    Diagnosis help please ( recent change to very poor mileage per charge)

    The charger is a SANS charger, label says 48 V 3.0 Amps meter reading is 54.2 Volts.
  12. B

    Diagnosis help please ( recent change to very poor mileage per charge)

    I just finished charging the battery I use every day. The charger shut off at 99% on my bike screen and I left it plugged in for another hour and it then showed 100%. This battery had the charger charging light turn off at 98% on the bike screen once last week. The battery is now showing 100%...
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    Diagnosis help please ( recent change to very poor mileage per charge)

  14. B

    Diagnosis help please ( recent change to very poor mileage per charge)

    I'm completely ignorant about the controller and I wonder if it could cause the symptom.
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    Diagnosis help please ( recent change to very poor mileage per charge)

    Thank you, DaLanMan. Only one of them was in use, the other was used only once or twice mostly just well stored. So one of them was used almost every day, the other basically unused. That difference makes me think it's not the battery(s).
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    Diagnosis help please ( recent change to very poor mileage per charge)

    I have a store-bought ebike 3 yrs old with Bafang 500 watt hub motor and I have 2 batteries, the 2nd battery was purchased from a different company and was in indoor storage and kept at medium % full, charged some more periodically to not allow to go to low voltage. Both batteries are 48V 17 Ah...
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    Thumb throttle CRUISE CONTROL no cost in 2 seconds

    Hey, thank you! Clever ways to do it.
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    Thumb throttle CRUISE CONTROL no cost in 2 seconds

    Nice.
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    Thumb throttle CRUISE CONTROL no cost in 2 seconds

    markz, thank you for your interest and input. Indeed. So you don't do that. :) You might kill yourself trying.You set the throttle for what you estimate it needs to be for a certain top speed on flat road, before you take off. That's more sophisticated and safer, but not worth expense and...
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    Thumb throttle CRUISE CONTROL no cost in 2 seconds

    1. Turn bike on 2. Hold brake lever to engage motor cutoff switch in order to prevent bike jumping forward 3. Push thumb throttle to position wanted 4. Insert cable tie at extreme angle to find the channel, insert all the way till it stops 5. Let go of brake and you're off! ZOOM!!! 6. Use brake...
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