Battery Charging & Care Follow

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6 comments

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    Gregg Ritchie

    Great information!
    its an easy read, and it projects how the Dost E-Bike is a smart choice for anyone to consider purchasing, whether your a beginner or experienced rider of any type or model of an Electric Bicycle.

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    Kim Korn

    In the user forums, there has been a lot of questions and conflicting guidance on how best to use the dual battery system. On this page, you say nothing about whether to use one battery at a time or both at once (dual-mode) while riding. 

    On https://dostbikes.com/product/secondary-battery-kit you say this:

    Automatic battery balancing - In Dual Battery mode the two batteries will discharge at the same rate.
     
    This, to me, says it is OK to use the batteries in dual mode. That is what we have been doing and it works great. I am also thinking the % remaining and range calculation accounts for both batteries.
     
     - Bill Schecter: I spoke to DŌST BIKES about the spare battery. I was told to leave the secondary battery off until main battery is down to 20%. I did this and battery jumped from 20% to 85%. I am not sure secondary battery was fully charged.
    and
    - Steven B Plesser: (referring to dual-mode)...the display will show the percent remaining only for the battery it is currently drawing from
     
    Can you please provide explicit and clear guidance on the best practices for using two batteries. I really like the dual-mode, because I exercise both batteries at once. Without this feature, I would rarely use the 2nd battery and I am afraid it would atrophy, so to speak. I also feel I am getting accurate range calculations in dual mode.
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    Team DŌST

    Hey Kim, thank you for voicing your concerns and I'd be glad to try to clear the air!

    There seems to be a little bit of confusion between how the dual battery balancer works. If the two batteries are at the same voltage, that's when both batteries are drawn at the same rate. If there is a disparity between the voltage on the two batteries, the display and system will draw and read power from the battery with the higher percentage until both batteries are at equilibrium.

     

    From Bill's comment, this does make sense and is consistent with the system reading the battery with the higher charge.  In terms of the best practice when utilizing the batteries, if you are planning on going on a longer trip, turn on the secondary battery so both batteries can drain evenly. If you are, however, only planning on going on a short trip, utilize the main battery. If you find that you are running low on power on the main battery, it is advised to turn on the secondary battery before the charge reaches 20%. This is because lithium ion batteries should be kept between 20-80% charge as often as possible as it is their preferred state of charge.

     

    Hope this helps answer your question!

     

    Thank you,

    Gordon

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    Kim Korn

    Gordon, thank you. This helps some.

    But I am still not sure why I don't exercise both batteries by staying in dual-battery mode all the time. If I were to primarily run off of only the main battery, my secondary battery will, more often than not, be sitting at 100% charge, possibly for weeks on end.

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    Greg McCormack

    I to am having issues regarding battery usage. How do you switch from dual battery mode to single usage? Yesterday, on a 29 mile ride I returned with less than 5% battery? 20 miles into the ride I was at 62%, within 5 miles it had dropped to 10% and only by staying in 0 or 1 pas was I able to get home. I have 2 batteries, both installed on the bike, and have never depleted the battery like I did yesterday. Could the battery have switched to single mode on its own? 

     

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    Richard Chester

    How do I see the charge remaining on the second battery on the display?

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