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--- projects:drill-powerbank-pd [2025/11/18 12:08] – [DIY Power Bank PCB options] admin
+++ projects:drill-powerbank-pd [2025/11/20 07:48] (current) – [Add USB-A to IP2368] admin
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+⚠️UNDER CONSTRUCTION!⚠️⚠
 ====== Drill battery pack as power bank ======
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 See what is inside various power packs here: [[https://www.werkzeug-news.de/threads/welche-akku-zellen-sind-bei-welchem-hersteller-verbaut-innenleben-akkupack.39500]] \\
 As one of mine is unused as of now, I want to use it as USB-C juice for my notebook and Pinecil soldering iron too. \\
+===== Buy solutions =====
+You can buy USB adapters e.g. for Makita/Dewalt/Milwaukee 18V Li-ion Battery packs with 18W fast charging for ~5€, but they do not support charging the drill battery pack and are not available for all brands. They do come with additional LED flash light, there even is a version with 15W wireless charging for ~13€. \\
+Somebody [[https://kaspars.net/blog/usb-c-pd65w-adapter-charger-18v-20v-batteries|disassembled a PD65W version UDCB094]]. \\
+For ~18€ you can get a 138W EPR+AVS capable version which can even charge the drill power pack via USB-C. \\
 ===== DIY Power Bank PCB options =====
-There are ready to use fast charging buck modules with USB-C PD 65W (supporting QC too) for cheap ~1.2€, whose output voltage is <=input voltage (the buck only ones) - not a power bank module so charging the battery is not possible. \\
+Why not build our own version? Let's do it! \\
+There are ready to use fast charging buck modules with USB-C PD 65W (supporting QC too) for cheap ~1.2€, whose output voltage is <=input voltage (the buck only ones) - with these modules charging the battery is not possible as it is not a power bank module. \\
 To be able to charge the battery pack too, I am going for a bidirectional IP2369 board with 45W on PD. As it is a power bank IC, it has the advantage that it can charge the 1-6 cells, configurable by resistor. It is buck+boost so no matter how many cells you use, there will be 20V for PD. \\
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 FYI: read about [[:life_hacks:battery_tips|battery tips and LiPo charger boards]] \\
+==== Add USB-A to IP2368 ====
+The bidirectional IP2368 board I've chosen has only one USB-C port. Looking at the datasheet, you can see how USB-A is added the proper way with an N-channel MOSFET. \\
+{{:projects:diy-powerbank:ip2368_usb-a.png?direct&200|}} \\
 ====== Battery packs ======
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 So what we are going to do is 3D print an adapter for the connection to our power bank module. \\
 ===== J.C. Schwarz battery pack conversion =====
-Inside are 5x 18650 Samsung cells. I got them cheap in a sale (I do not even own a compatible drill). \\
+I have a 18V 3Ah battery pack called BL18025 "JCBP18" by J.C. Schwarz, manufactured for Hornbach Baumarkt. Inside are 5x 18650 Samsung "INR18650-30Q" cells. I got them cheap in a sale (I do not even own a compatible drill). \\
-The PCB only has passive components
+The PCB has only passive components. \\
 ^ Pin  ^ Name   ^ description  ^
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 Uses 0.75mm nickel-plated plates as contacts. \\
+Somebody has used washers as contacts with the 3D-print (neat idea!:) [[https://www.printables.com/model/427974-bosch-professional-18v-battery-adaptor-adapter-mod]] and created an [[https://www.printables.com/model/436123-diy-18v-makita-bosch-usb-c-powerdelivery-supply-po|enclosure around]] that. Thanks, we can reuse it four our desired electronics. \\
 ===== Bosch consumer 18V =====
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 Bosch "consumer" (aka Bosch Home and Garden) = green \\
+===== Makita and other =====
+There are already cheap [[projects:drill-powerbank-pd#buy_solutions|buy solutions]] for Makita/Dewalt/Milwaukee. If you need to 3D print Makita connector, I like this one too: [[https://www.printables.com/model/436132-makita-18v-battery-connector-adaptor-adapter-modul]] \\
+====== other add-ons ======
+There are other add-ons like a flash light for your battery pack. \\