so hey I got a question for it if I'm building out a pack and I know it's for
in series and I know I'm gonna afford it in parallel
do you say the parallel first so is it a 40 P for us or is a 4 s for TP I don't
know hey guys this is Frank this is the DIY engineer Channel today we're going
to continue to cover our talk of this battery Packer right here this is a 4s
for TP so we're gonna build three of these and they're gonna be replacements
for my portable power pack we've been doing this upgrade cuz I'm taking my
portable power pack from 2.2 kilowatts I said kilowatts with a K to 4 kilowatts
hey guys this is Frank and this is the DIY engineer channel on this channel we
do things like batteries and we also do things like house projects building
construction I want to do some concrete countertops I've done quite a bit in the
past and I'd like to show you guys some of my techniques and how I do concrete
countertops the other thing we're looking forward to doing probably this
summer is starting work on a an electric vehicle I'm hoping to take a older model
Mazda Miata and pull the engine on it and actually put a bunch of batteries in
it and some motors and see if we get it to go anyways so if you like this
channel if you like this kind of stuff subscribe below subscribe and then hit a
little bell tongue so that you get updates whenever I publish something so
also I have a questionnaire just a real brief question it's gonna be right up if
you could if you wouldn't mind just taking a minute answering the quick
question it's just select one of the items and with that we're going to talk
about this 4s 40p battery let's go do some soldering we're gonna do some
soldering so you can see how I did the soldering for this particular pack I
know soldering whoo-hoo yay and we'll chat a
little bit on the back side all right let's go
so previous to doing this I went through and I cleaned off all the tips of the
cells and after cleaning the cells then I tend every one of them you know I put
some flux on them and then added globs of solder in preparation for putting the
fuses on and you can see here I'm actually attaching the fuses to the tops
of the cells and this is kind of a tedious process some of these cells
don't like to take solder so it takes a little bit of work but then after I get
them on there this is a close-up of what the cells the fuses look like as they're
attached to each of the cells the next thing I have to do is I have to clean
off any grit and grime off of the bus bars and then I slide the bus bars
underneath the fuses and then I've just worked the fuses down over the top of
the bus bar so that at least something like this gets it in there nice and snug
I don't use any glue or hold the bus bar in place because the the solder itself
will keep it keep it snug haven't had any issues with that so once the bus
bars in place then I just go back on the top side of it and I start working on
the soldering of the backside so I saw her each of the cells on the back side
so that they can connect to the opposite side then once I do this piece and once
I complete soldering the fuse to the second side of the bus bar then I come
back and I'll actually solder directly to the bus bar so it's quite a bit of
soldering I think to do this one side of this cell pack took me about two hours
so it is kind of tedious and you're only going to see just a few minutes of it so
there's what the bus bar looks like after it's been the fuse has been
soldered to the bus bar and to each of the cells then later on what I'll do is
I'll put crossmembers between the cell packs so the lower section there are
positive and then the other cells above or negative but just time together I
hope that was helpful in seeing how I kind of did the soldering process on
there I know like a lot of stuff going on but you
know it is what it is and there are a couple of you and you know who you are I
hope who have commented and I haven't responded and you've actually written me
emails and I haven't completely gotten back to you and is partly because I'm
just like slammed really busy and end up working like yeah I'm
sleeping about five hours a night so plus doing this working full-time
it's just a lot going on but that's okay that's not your problem it's mine and I
will I will get back to you just so you know all these red cells are for my
power wall we're gonna be going to the power wall we're gonna be doing power
wall stuff you're real soon well I'm hoping within the next couple of months
at least because I'm I'm ready for it I'm ready to start powering my house
also looking at some solar solutions now one of things I didn't point out when I
first started this channel I didn't point out why I'm doing battery storage
or why I'm doing power storage I wanted to do solar I wanted to put solar panels
on my roof everybody around me is doing it you know it's kind of the same thing
but you don't wanna come down to it I I couldn't justify putting panels on my
roof and then giving that power back to the power company yeah I got a reduced
rate but at what cost 30 40 grand not worth it so what I want to do what I
wanted to do was actually build my own way of storing power so that I could use
it at my leisure so I could use it at night I could run off of my solar panels
during the day use my batteries at night and be able to have the ability to be
really almost off the grid and there's in some cases I will get to that point I
will get to the point where I'm off the grid but for now I I'm doing power wall
and so to get to power wall I didn't know enough about batteries I'm probably
like some of you who didn't experience or have a lot of experience working with
batteries and building these kind of kits and so I decided hey I'm gonna
start small so I made small kids you know I know 2.2 kilowatts is actually
quite a bit but they're smaller smaller than you know a 10 kilowatt power wall
so now now that I've had a chance to learn I'm sharing but I'm also going to
go and do my our wall and I would encourage you if
you have even just the ability to put together you know 100 200 cells build
something small it's something that you can learn from have some experience do
some you know short-circuiting stuff and watch sparks fly and anyways so do it
you can actually do those kind of things and I would encourage you to do it it's
a good experience you learn a lot and you do a lot of reading and yeah you can
watch a lot of me but I'd actually encourage you can watch a lot of me I
don't care but that's why I got into this is I want to go solar I want to be
self-sufficient I want to be on my own doing my own thing and not necessarily
drawing power from the grid and I didn't think it was wise for me to put up solar
panels before having a way to store it because right now I built the house that
we're living in and I built it with all LED every light bulb in my house is LED
and in that process my power bill is about a hundred bucks a month
we're talking four thousand square feet at 100 bucks a month so I actually got a
pretty good rate on electricity and I can't if I go and put you know 30 40
thousand dollars in solar on my roof or in my yard it's probably gonna cost me
more than that because sometimes I've had these solar companies come in and
they say hey we'll make you a really good deal you know we'll just take your
power bill and we'll you know you'll just pay like ten bucks less than you
have been and that's gonna be your payment with interest and I would never
pay it off on a box that just would go forever so that's really not an option
for me so what I did is I Dopp today go batteries first once that my batteries
in place and all to get solar panels up and then I think it'll be I don't know
pretty smooth sailin I hope I don't know I haven't done it but that's what I'm
doing right now and you say well Frank those batteries are expensive well you
know what take a look here I got this on a deal and in that process I went
through I've gotten all of these for under two grand I'm less than two
thousand dollars in batteries and I did that because I looked for deals I went
out hunted packed found I grabbed laptop battery storm apart I
you reskin know a bunch of stuff actually all of these red cells are
brand new they're all new and I got them for less than a buck a cell so you can
find those deals we just got to look for them and it's I think that sometimes the
hard part and yeah when I want to grow my power wall it's gonna take more cells
I'm gonna have to buy more cells and I'll probably gonna spend in a buck buck
50 buck and a quarter I don't know I don't like going over a dollar 25 I
don't like going over a buck and a quarter for for replacing cells so we'll
see we'll see what happens and hopefully you're doing that too all right so with
that I'm gonna end this and hopefully the information in this video has been
helpful again if you if you liked it please subscribe below ding the bell no
way there you'll know whenever I publish something new you'll be able to get
updates and with that we'll catch you next week thanks for watching okay so
let's go back and rethink that