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Old Streetfighter Motorcycle Forum Post 05-10-2019, 08:41 AM   #11
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Default Re: custom lithium Batteries

i seen the simplicity of building one. but where can you buy the base and top clamp pieces to hold the a123 batteries. like a non solder kit. clamping batteries together with jumpers.
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Old Streetfighter Motorcycle Forum Post 05-10-2019, 11:39 PM   #12
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Default Re: custom lithium Batteries

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i seen the simplicity of building one. but where can you buy the base and top clamp pieces to hold the a123 batteries. like a non solder kit. clamping batteries together with jumpers.
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Old Streetfighter Motorcycle Forum Post 05-17-2019, 06:32 PM   #13
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Default Re: custom lithium Batteries

Are there any implications with charging/discharging lithium cells ? I need a custom shape one as mentioned here and Ive heard things about maximum discharge voltages and current draws.....I don’t want toasted nuts
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Old Streetfighter Motorcycle Forum Post 05-18-2019, 12:44 PM   #14
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Default Re: custom lithium Batteries

Just 3D print a battery pack enclosure to hold a handful of 18650 batteries.

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Old Streetfighter Motorcycle Forum Post 05-29-2019, 09:07 AM   #15
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Default Re: custom lithium Batteries

so client brought in a battery he purchased from us a while ago, thats dead... like nothing on terminals

it's way pass his warranty but he was annoying enough to piss me off and i sent it towards company owner. anyway we decided to cut the battery open and look whats inside




here you can see that positive terminal wire has burned, probably because of bigger loads or the fact that HOG's like to rattle like crazy. nevermind the fact that we already changed one battery for unknown reasons at the moment.


anyway i soldered it back on, was a bit of a struggle. and it works, has voltage, has CCA even holds 200A load(barely though)


so the morale of the story... these batteries are made from lithium polimer packs. 4pcs and had ballancing unit inside it to keep cells ballanced. what i'm surprised there is no overload protection, not even fuse

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Old Streetfighter Motorcycle Forum Post 05-29-2019, 09:48 AM   #16
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Default Re: custom lithium Batteries

found another warranty item, that was left with us. there are 8 packs. 2+2+2+2. this one has one cell(s) dead. so might assemble pack in 1/2 of size... because why not

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Old Streetfighter Motorcycle Forum Post 06-15-2019, 05:10 AM   #17
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Default Re: custom lithium Batteries

so for the sake of experimenting i did some experimenting



managed to get 4 okey cells from this pack that had 2 completely dead. was too scared to cut them apart with angle grinder and we dont have poverfull soldering toold to get those tabs unsoldered so i cut them with hand saw like i could.

then i went on to spot weld them together. since the surfaces werent perfect it wasnt an easy task, after that i added some acid and solder on top for better connection.



this is the end result so far. tested with tester and pack emits 169A (EN)


i already sent matti a link, found new packs in china. i have few ballancer units at work from completely dead ones. might order them and do a better spot weld after. now i have to press on cable shoes and test it on bike... might even get a box 3d printed and use it for a while

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