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    icharger failures, detail how your icharger failed

    Hello All. Could you please help me to repair my icharger 3010B. Yesterday i used it for charging li-ion batteries. When i tried to measure internal resistance of li-ion cells charger shows string containing rectangles of display units and stopped working. Turning off and on does nothing. I...
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    DIY Battery Upgrades for Goped ESRs

    Hi guys. Do you know what is the highest voltage that controller allows to use? And why dont you use 40152 cell. I assume that it will fit in deck spacer.
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    Goped ESR750 hoverboard convert to SLA battery.

    Damn BMS it turns off batteries when voltage became 23,0. 3.28 per cell. It is estimated for using with LiPo batteries and cutoff is to early. Cutoff worked at 30 km trip. The main problem is that i can't start charging it with icharger 3010b or with onboard charger. It doesn't start to charge...
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    Goped ESR750 hoverboard convert to SLA battery.

    Its strange but... I have charged batteries with icharger 3010b to 28.7 V and now iam trying to charge it with onboard charger to 29.5 but charging process stops just after ~ 1 minute and voltage is the same 28.7. Iam assumed that if i will turn onboard charger on it will charge batteries to its...
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    Goped ESR750 hoverboard convert to SLA battery.

    There is variable resistor on the charger board. But it has a glue drop on rotatable part. And i have no idea how to regulate because i can't start charger without controller and can't measure its voltage without batteries connected. It starts only when batteries and controller are connected to...
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    Goped ESR750 hoverboard convert to SLA battery.

    You are right. I have found that termination voltage on my iCharger 3010B for LiIo batteries is 4.10 V. So i should to charge pack to 28.7-29 V but not more. Onboard charger is estimated to charge LiPo batteries to 4.25 V per cell. Is it possible to drop down highest voltage by modification of...
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    Goped ESR750 hoverboard convert to SLA battery.

    I ride 20.62 km and its voltage became 25.3. So i can ride more. I think it can be ~25 km. I dont try to ride far away, i was tired of his long ride and try to finish it as soon as possible. But if i need to change this battery i will use 38140 LiFePo4 without balancer and i will use iCharger...
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    Goped ESR750 hoverboard convert to SLA battery.

    Hi guys. Now i know how did the esr tell me that he is ready to ride. He bliknk with all his leds at the same time. And the voltage is 29.8 It is ok because when i turned it off the voltage will brings down for ~ 0.2 Thank you guys for helping me.
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    Goped ESR750 hoverboard convert to SLA battery.

    Charger use a higher voltage because when it will turn off battery voltage goes down about 0.2 V. After few hours Lix batteries can be charged again for some mAh. Anyway guys who has hoverboard with lipo batteries by default tell me pls is it will stop to blinking when charges is complete or not?
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    Goped ESR750 hoverboard convert to SLA battery.

    I asked guys who really know what is going on with onboard charger and leds on the throttle lever. As far as i know charger always use little more voltage because when charger is turned off the battery voltage is going down. So charger turned off when voltage is about 4.24 V on cell.
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    Goped ESR750 hoverboard convert to SLA battery.

    I have hoverboard that was with lipo batteries by default. So charger should to stop charging when it is fully charged i think. Or BMS should to disconnect batteries. It doesn't start charging until the batteries will have specified voltage AFAICS.
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    Goped ESR750 hoverboard convert to SLA battery.

    I have only onboard ESR charger. And i dont know how it will show me that charging complete. Its just blinking with leds while the voltage is 29,7 and do nothing, maybe i should to wait a few minutes and it will turn off, but i afraid.
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    Goped ESR750 hoverboard convert to SLA battery.

    Guys, pls help What should i see when charging is complete? It is blinking with 3 led 1+2+3 and than turn off but summary voltage is 29,7 but it should be 29,5 I afraid of overcharging :-) Thanks a lot.
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    Goped ESR750 hoverboard convert to SLA battery.

    I've made this. I used 18650 5p7s with original goped BMS. I checked with voltmeter that every parallel group of cells after 1 hour of charge has the same voltage. And than pack battery. Now it is on charge. It took a lot of time (about 9 hours) to charge it successfully. I checked charge...
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    Goped ESR750 hoverboard convert to SLA battery.

    Thanks a lot, i have already saw this video. I thought about the conversion goped to Li-ion batteries. And i can use stock BMS with that batteries. But it is more expensive than 38120. Another plus of 38120 is easy assembling. Li-Ion batteries i should to solder carefully, it is not the problem...
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    Goped ESR750 hoverboard convert to SLA battery.

    Oh, sorry. I have made a mistake. Not axial play, but radial play of break disk. Axial was not so big, it was about 1 mm and i align it in two minutes. I read a lot of posts and calc battery price. The most rational way is to set 8S2P 38120 Headway with Chargery Power BMS8. The price of the...
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    Goped ESR750 hoverboard convert to SLA battery.

    Praised American quality :oops: Axial play of rear break disk is about 7 mm !!! Every of 4 fastener holes distance to axial are differ. Shame on goped factory :oops: And i'am look like an idiot while trying to align it with my clock indicator with axial play 7 mm !!! :mrgreen:
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    Goped ESR750 hoverboard convert to SLA battery.

    I have some new information about controller. There is no any battery protection in it. Protection is in the LiPO battery. It has 2 PCB with balancer and protection. If i use 18.9 V to power up controller it works, led on the throttle leveris blinking but motor starts. But if i use 15 V to power...
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    Goped ESR750 hoverboard convert to SLA battery.

    picf1688 firmware is locked as i expect. Guys is goped sell parts to rear brake kit separately? My mudguard is crashed and one of aluminum part is strongly scratched. They are did not answer me on my messages.
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    Goped ESR750 hoverboard convert to SLA battery.

    Guys pls explain how goped programmer working. It has firmware on its own board and rewrite it every time when you set any values or it just rewrite this values. Do you need PC to do this? There is pic16F88 on controller board, i have pickit2. So i can read firmware if they did not to lock it...
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    Goped ESR750 hoverboard convert to SLA battery.

    Yeap but i have moped with SLA battery from 2012 year and i never change its battery and never check it for this period. And its still alive, not as new but it is working. And the price of SLA is 100$ but the LiPo cost is between 200 and 400$. After the next sanctions we will not have money even...
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    Goped ESR750 hoverboard convert to SLA battery.

    Is the a way to detect controller version by its marking? Is it SLA or LiPO or something else. I have doubts that it is a true hoverboard. I heard that the acceleration lever is different to SLA and LiPo batteries. Yeap charging is ve problem, cuz LiPo charge cutoff is on 4.2 V per cell. The SLA...
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    Goped ESR750 hoverboard convert to SLA battery.

    My hoverboard is old, and uses brashed motor is the same like here http://goped.com/motor-esr-model-111130020/ I know all about lipo batteries, i used them from 2006 year, but i can buy 4 SLA batteries tommorow for 100$ but lipo is more expensive and i cant buy them tomorrow. Another problem is...
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    Goped ESR750 hoverboard convert to SLA battery.

    Hello guys. I have bought used goped esr750 hoverboard with dead LiPo batteries. They are almost dead. I have no money and purpose to buy new LiPo batteries because the weather in my country does not let me use goped often. So i need an easy care batteries. I will use iCharger 106B+ to charge it...
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