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    How to get Li ion batteries to work in (SLA) UPS

    JBD has their own website selling their products but they also sell on AliB! Many items are sold out on their own website but available on AliB, so strange. Don't want to start another thread, looking for battery cable wire to beef up my friend's spot welder transformer and add handheld welding...
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    How to get Li ion batteries to work in (SLA) UPS

    Cool, didn't know that, so smart BMS it is. Many here don't recommend ali-xyz, but to get it from OEM only. I'll check the products from recommended JBD again, hope they have them in stock meanwhile. Thanks!
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    How to get Li ion batteries to work in (SLA) UPS

    Thanks, diving into BMS, reading their specs (if any), seems most start balancing only when over 4 Volts! Wanted to avoid going that high. Do I need an external balancer (in hope they balance all time-ish)?
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    How to get Li ion batteries to work in (SLA) UPS

    Gotcha, looking at JBD BMS offerings, all 7s units are sold out or unavailable, for over a week now. There are ebay and alibaba offerings but considering the counterfits, i'd rather get them directly. Question, does JBD have a secondary official outlet, a reseller in the US or Europe? Also...
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    How to get Li ion batteries to work in (SLA) UPS

    The batteries will definetly not brought near the full or empty regions, I will make sure of that with the UPS low and high triggers. The batteries will have a long time (days) to recharge/balance, never experienced more power outages shortly after a long one (+5h). So what you are mentioning is...
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    How to get Li ion batteries to work in (SLA) UPS

    I had built battery packs in the past (soldering the NiMh taps), now borrowed a sukhi spot welder. Used Daly 30A BMS for a different project, software is weird, but great to have insights. Is this what Amberwolf and you think of? 150mA passive balance Is that enough for slow charging/balancing...
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    How to get Li ion batteries to work in (SLA) UPS

    Thank you for your reply. Thanks for worry free charging via SLA UPS. I can adjust the "float" voltage quite accurately, planing for around 3.9V per cell. Makes sense regarding balancing. I now understand why on JBD one of their BMS was featured with 150mA balancing current. Which are the BMS...
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    Help with proper 10s6p battery pack welding/tab config

    I found these, but no spacers yet, how do you plan to keep them in place?
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    How to get Li ion batteries to work in (SLA) UPS

    The current draw is only around 300W i.e. 12A @ 25V. Would a Smart BMS with 30A be enough, considering the actual max output of SMC1000-2UC is only 600W (24A@25V)? "IIRC JBD makes contactor-based units..." I tried to dig into JBD's Smart BMS but got lost. So many products but little info on...
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    How to get Li ion batteries to work in (SLA) UPS

    Dear Amberwolf, I love you! Really hoped you reply. Thank you! Since power outages here in SoCal can take half a day, I was planing on 7S30P Samsung Li-ion 2500mah 18650 cells (27.3V * 75Ah). These 210 cells fit perfectly in the pictured space. Don't know how to arrange/connect them (either...
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    How to get Li ion batteries to work in (SLA) UPS

    Repurposing APC SmartUPS (SUA1000, SMC1000 etc) for home appliance backups (fridge, mom's oxygen machine etc). Hi all, My apology, I know this is not directly related to endless, but I couldn't find another place with as much educated and helpful and kind members. I (re-)searched this subject...
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    Santa Monica spot welder

    Hi there, looking to borrow/rent a spot welder in Santa Monica (and surroundings) to connect eight 32650 batteries please. Am sometimes in San Bernardiono also. Thanks!
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    Replacing a 12V 7Ah SLA battery with 14.4V 12Ah keeping SLA's dimensions

    Yes, violent (shock) vibrations due to windsock on top of the mast. Removing the lead stuff from the old SLA is a real pain so far, will order one of those containers next time. Will have to solder the cells together, wish there were a hobby place here in West Los Angeles where I could spot weld...
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    Replacing a 12V 7Ah SLA battery with 14.4V 12Ah keeping SLA's dimensions

    That was valuable info, thank you! I thought the batteries must be spaced so they don't short in worst case scenarios. And also leave room for stretching (if they do stretch). Now I understand your "overengineered" comment. I designed it so that regular credit cards can be (heat) bent to act as...
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    Replacing a 12V 7Ah SLA battery with 14.4V 12Ah keeping SLA's dimensions

    Which is the "Bluetooth BMS"? Is your friend happy with it? Contrary to your friends speaker use, this is not for entertainment. This battery will power a weather station and some other sensors. Does anybody have suggestions before I start building my very first cell based battery? Thanks!
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    Replacing a 12V 7Ah SLA battery with 14.4V 12Ah keeping SLA's dimensions

    Hi all, my first attempt to put together some batteries, so please be helpful and kind. I was looking to replace a 12V 7Ah SLA battery and found ready made batteries but with low Power or other issues. This should replace a standard 12V 7Ah SLA battery and has eight 32700 6Ah LiFePo4 batteries...
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    13s4p BMS or 4x4s BMS ?

    John61ct thank you for your suggestions. I had checked out some of your mentions and looked also into the others. They are a bit expensive and so I decided to just try a $50 shipped 4S Daly smart BMS for now, need to replace a 12V7Ah SLA anyhow. I understand the active vs passive/cutoff...
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    13s4p BMS or 4x4s BMS ?

    Bump
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    13s4p BMS or 4x4s BMS ?

    ..... as mentioned... Appreciate your BMS recommendations!
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    13s4p BMS or 4x4s BMS ?

    Hey all, happy(er) and healthy(er) New Year! I haven't been around for a while, so much has changed! DrkAngel's index is huge and even more amazing! I searched and this question was asked often, and I'm sure you gurus are tired of these type of questions. Reminds me of Life of Brian (out the...
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    Actual size of HXT 2mm and 3.5mm and EC2 Plugs?

    Am I posting my question in the wrong thread? I had it in general talk, but thought this might be more appropriate. HK just responds with their wrong dimensions, I could find the measures of the EC3 plug, but no info about the HXT 2 and 3.5mm. Any guidance is appreciated!
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    Actual size of HXT 2mm and 3.5mm and EC2 Plugs?

    Anybody please?
  23. P

    Actual size of HXT 2mm and 3.5mm and EC2 Plugs?

    Hi all, I'm looking desperately for the outer dimensions of the https://hobbyking.com/en_us/hxt-3-5mm-gold-connector-w-protector-10pcs-set.html https://hobbyking.com/en_us/hxt-2mm-gold-connector-w-protector-10pcs-set.html https://hobbyking.com/en_us/ec2-male-battery-connector-5pcs-bag.html as...
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    Was given a G-Bike - need a charger and probably a battery..

    Congrats to your success! mine said brush, too, it's probably just a name of the company. Check my label, says the same but was 1kw brushless. https://endless-sphere.com/forums/viewtopic.php?f=2&t=49287 I doubt the "pump the rear brake lever to get power again to the motor", I think it might...
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    Battery charging away from home

    In any case or country, I recommend a very long extension cord. Mine is two prong and curled up in a watertight plastic bag. More important than those stupid tools which came with my scooter.
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