272
submitted 10 months ago by [email protected] to c/[email protected]

(for various reasons I needed to join a mismatched pair of 18v drill and battery, annoyed at how much fun it was)

you are viewing a single comment's thread
view the rest of the comments
[-] [email protected] 93 points 10 months ago
[-] [email protected] 28 points 10 months ago

As long as voltage matches, some batteries at 12v (4S) and others are 24v (6S)

[-] [email protected] 2 points 10 months ago* (last edited 10 months ago)

Yes, and also.... Please make a good faith attempt to understand allowable continuous discharge rates for the batteries. (Spoiler: Most battery packs are going to be well within a safe range and may also limit output current.)

For example: If a drill has a maximum current draw of 2 amps and the pack is only capable of discharge rate of 1 amp, you are risking a thermal runaway condition. (Lithium batteries get esplody in those conditions.)

Battery packs generally use a series-parallel wiring arrangement to decrease per-cell discharge and any protection circuits should limit total current draw. Knockoff battery packs may lack protection circuits, but for this specific problem the way the batteries are wired should prevent or limit any issues.

(I get a bit preachy when it comes to battery safety. Sorry. Many people simply do not realize how energy-dense our device batteries are these days.)

[-] [email protected] 15 points 10 months ago

Ah, fellow EE graduate i see

this post was submitted on 30 Jul 2024
272 points (98.6% liked)

3DPrinting

18090 readers
296 users here now

3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.

The r/functionalprint community is now located at: or [email protected]

There are CAD communities available at: [email protected] or [email protected]

Rules

If you need an easy way to host pictures, https://catbox.moe/ may be an option. Be ethical about what you post and donate if you are able or use this a lot. It is just an individual hosting content, not a company. The image embedding syntax for Lemmy is ![](URL)

Moderation policy: Light, mostly invisible

founded 2 years ago
MODERATORS