Parallel Charging 52v Batteries
Posted by ENTroPicGirl@reddit | ebikes | View on Reddit | 8 comments
I have two identical batteries bought at the same time; 52v 50amp 10Ah Mini-Max from Electrify Bikes Co., and am going to connect them via ‘Y’ connectors in parallel. Connecting them in parallel is easy, just charge them within .1v<.5v of each other and I’m good to connect. However I’m not sure how to go about charging.
Do I:
Option A:
Disconnect one black lead in the charging dongle to Battery 1 and the red lead on charging dongle to battery 2.
This is how we charge deep cycle 12v batteries using a battery tenders in the RV (shown in image)
Option B: hook charging dongles 1 & 2 together and connect that to charger.
Second question: my charger has a dial that says 80% 90% 100%. Which setting do I choose? The goal is to have them last as long as possible. Speed at which they charge isn’t my concern.
Third question: how often should I charge my batteries, do I wait till I’m down to one bar of power or should I charge when I’m at 50% trying to make these batteries last as long as possible.
Build Spec:
-Bike : Borealis ‘Flume’
-Wheel sizes: 29x2.6 (for late spring/summer/fall) and 26x5 Johnny 5 for spring mud season 26x5 studded Dillinger fives for winter
-Motor: CYC X1 Gen4 52v
-Batteries: 52v 50amp 10Ah Mini-Max Electrify Bikes Co.
dustNbone604@reddit
Charge them in parallel, there's really no reason not to aside from them individually charging half as fast. Just keep them connected in a set. As for endurance, avoid letting them sit below 30% for extended periods, and charge them to the lowest amount that will let you complete your trip without dropping under 30%. Basically really dead and really charged are both harmful to Li-Ion batteries, so avoid that.
ENTroPicGirl@reddit (OP)
Option B it is, and just leave both sides on their respective splitters. I appreciate your assistance.
ENTroPicGirl@reddit (OP)
Option B and just leave both sides on their respective splitters.
poedraco@reddit
I'm confused about the question here
Vespizzari@reddit
Get one of the readily available parallel battery devices for ebikes. It'll make the whole thing safer and they're easy to install. No worrying about balance issues.
Something like this: (Haven't tested this one, just googling) https://www.aliexpress.us/item/3256810435411096.html?src=google&src=google&albch=shopping&acnt=248-630-5778&isdl=y&slnk=&plac=&mtctp=&albbt=Google_7_shopping&aff_platform=google&aff_short_key=UneMJZVf&gclsrc=aw.ds&albagn=888888&ds_e_adid=&ds_e_matchtype=&ds_e_device=c&ds_e_network=x&ds_e_product_group_id=&ds_e_product_id=en3256810435411096&ds_e_product_merchant_id=552195555&ds_e_product_country=US&ds_e_product_language=en&ds_e_product_channel=online&ds_e_product_store_id=&ds_url_v=2&albcp=22974300163&albag=&isSmbAutoCall=false&needSmbHouyi=false&gad_source=1&gad_campaignid=22970182241&gbraid=0AAAAACWaBwcnyomRCPG24o0GSik2dOuZf&gclid=CjwKCAjwzevPBhBaEiwAplAxviU3XohJxcPRKm75vSQu_XIX8Qn3dJ_eeJlq_wYe_tO8msCn_dMpsRoCkJYQAvD_BwE&gatewayAdapt=glo2usa
ENTroPicGirl@reddit (OP)
I know there’s battery balancers available but that’s what I’m not looking for. I am looking for what sequence do I hook my charger to the batteries. As far as hooking up batteries, this is not my first rodeo. I’ve been in the power sports industry for over 22 years. I know all about 12 V systems and 12 V chargers, etc. etc. I’ve done solar chargers on my RV but this is different. This has a separate dongle for charging so I’m trying to sort out what I do in this particular case.
Vespizzari@reddit
Understood. That link is to a parallel connector that also has a charger input. You could leave both modules connected to the adapter and plug the charger in to it for simultaneous charging. I thought that was what you were ultimately after.
ENTroPicGirl@reddit (OP)