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botvolution (botvolution@mastodon.sdf.org)'s status on Saturday, 07-Jun-2025 05:25:15 JST botvolution
in reply to
- Emily Velasco
- Adam K0FFY ☕️
@MLE_online @k0ffy
So I had to look up what mppt is, and then I looked on eBay UK, and you'll be annoyed to hear that 15 English pounds will get you an unbranded probably Chinese mppt, about 7 American inches square, 36V out and what is I expect is a very optimistic power rating of 4kW & 100A.
Probably even cheaper from aliexpress lol but the ofc bug beautiful tariffs for you .

In conversation about 11 days ago from mastodon.sdf.org permalink
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  Emily Velasco (mle_online@social.afront.org)'s status on Saturday, 07-Jun-2025 05:25:16 JST Emily Velasco
  in reply to
  - Adam K0FFY ☕️
  @k0ffy The price is decent. It's just that if a 100A one is $44, i feel like should be able to get a 10A one for like $15, but that doesn't seem to exist
  
  In conversation about 11 days ago permalink
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  Adam K0FFY ☕️ (k0ffy@mastodon.sdf.org)'s status on Saturday, 07-Jun-2025 05:25:17 JST Adam K0FFY ☕️
  in reply to
  - Emily Velasco
  @MLE_online Ah, my bad on missing that detail. How about this one? MPPT, $44, and it says it supports 36V batteries. https://a.co/d/74lPXPl
  In conversation about 11 days ago permalink
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  Adam K0FFY ☕️ (k0ffy@mastodon.sdf.org)'s status on Saturday, 07-Jun-2025 05:25:18 JST Adam K0FFY ☕️
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  - Emily Velasco
  @MLE_online I’ve had good luck with Bioenno batteries, but never issued their charge controllers. They have an older model that’s not MPPT but is Constant Current/Constant Voltage (CC/CV) and is $50 for a 20A one. Their newer 20A model is MPPT but is $80. https://www.bioennopower.com/products/12v-24v-20a-solar-charge-controller-for-lifepo4-batteries-sc-122420jud
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  1. Domain not in remote thumbnail source whitelist: cdn.shopify.com
    
    12V/24V, 20A Solar Charge Controller for LiFePO4 Batteries (SC-122420JUD)
    
    SC-122420JUD User Manual | Solar How To Guide | Material Safety Data Sheet Product Overview The Bioenno Power 12V/24V, 20A Solar Charge Controller (Model SC-122420JUD) is a high-performance, intelligent controller designed to manage solar input and provide regulated output for charging LiFePO4, AGM, SLA, and Gel battery systems. Automatically detecting 12V or 24V battery configurations, this controller is essential for protecting your battery and load in solar power applications. Key Features 1. Wide System Compatibility Supports 12V or 24V nominal systems (auto detection) Works with LiFePO4, AGM, SLA, and Gel batteries Smart override lets users select battery type (b00–b04) 2. Efficient Power Regulation Input Voltage: 12V–50V from solar panels Output Voltage: 12V or 24V (regulated for both battery and load) Rated Charge/Load Current: Up to 20A Charging Mode: Constant Current/Constant Voltage (CC/CV) 3. User-Friendly Monitoring and Protection LCD display for voltage, charge, float, cutoff, and battery type Built-in USB output: 5VDC/1A Load control, over-voltage disconnect, low-voltage disconnect/recovery No load loss: <13 mA 4. Durable and Lightweight Dimensions: 6.5 in. x 3.46 in. x 1.5 in. (166 mm x 88 mm x 38 mm) Weight: 0.59 lbs. (0.27 kg) Charge Settings – Defaults and Battery Compatibility 12V LiFePO4 Charging Voltage: 14.4V Float Voltage: 13.8V LVD: 10.4V, LVR: 11.16V HVD: 15.5V 24V LiFePO4 Charging Voltage: 28.8V LVD: 20.8V, LVR: 23.2V HVD: 31.0V Battery Type Codes: b00 / b04: LiFePO4 (default) b01: AGM/SLA b02: Gel SLA b03: Flooded SLA To override for SLA/AGM charging:Hold the left red button for 6 seconds on the battery type screen until "b00" flashes, then press the right button to toggle battery type. Important Notes Never connect a solar panel directly to a battery or load without a charge controller. This unit regulates high input voltage (up to 50V) down to 12V or 24V depending on your battery system. Includes DC barrel plugs for easy integration. Policy Information Shipping: Standard Returns/Exchange: 30 Days Warranty: See Separate Warranty Page
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  Emily Velasco (mle_online@social.afront.org)'s status on Saturday, 07-Jun-2025 05:25:18 JST Emily Velasco
  in reply to
  - Adam K0FFY ☕️
  @k0ffy i need one for 36v lithium ion, so it looks like this one won't work
  
  In conversation about 11 days ago permalink
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  Emily Velasco (mle_online@social.afront.org)'s status on Saturday, 07-Jun-2025 05:25:19 JST Emily Velasco
  
  I want an MPPT thingie so I can charge my DIY backup battery with solar panels when camping or in case of power outage.
  However! All of the ones I find are BIG. Like 60 amps or 80 amps charging current. I don't need anything that big. I'm sure 5 amps would be plenty enough, but does anyone seem to sell that? Not that I can find so far.
  
  In conversation about 11 days ago permalink

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