Harman Kardon Speaker Battery Conversion NiMH to Lithium Ion
Vložit
- čas přidán 10. 03. 2022
- ✅ Wiring diagram: bit.ly/3i6Pzco
Parts and materials:
18650 Lithium ion batteries - bit.ly/3J3KCNl / geni.us/LqDK
3S BMS board - bit.ly/3Q85BmI / geni.us/E30JaSC
JST connector - bit.ly/3i0cki0 / geni.us/BVDujrc
19mm latching LED switch - bit.ly/3KwKoP7 / geni.us/eOreDJ5
Boost converter module - bit.ly/49PImGQ / geni.us/lyHuP
Kapton tape - bit.ly/3VOhzUj / geni.us/VOVm
Heat shrink tubing - bit.ly/4c7c9wa / geni.us/WZeB
Battery heat shrink tubing (65 mm) - bit.ly/3Pizkd8
Cloth tape - bit.ly/3PmHukT / geni.us/a51Bn6V
Tools:
✅ Spot welder - bit.ly/3Uc7O4w / geni.us/5ALs1M
TS101 soldering iron - bit.ly/3HUzrI9 / geni.us/owyDm5G
Multimeter - bit.ly/3vS2aKG / geni.us/UmrhyYk
Cordless drill - bit.ly/4bZg5PN / geni.us/A5AZi
Center punch - bit.ly/3xslc8u / geni.us/o5WBEwB
Wire stripper - bit.ly/4dG6Jt2 / geni.us/6epIs
Step drill bits - bit.ly/3Pe3fU6 / geni.us/xYRx7J
Helping hand - bit.ly/3B9mIgt / geni.us/Yyqyte
Hi there!
In this video I am rebuilding this quite old but still very capable Harman Kardon Go + Play Wireless speaker. It is equipped with 2 x 30W woofers and 2 X 15W tweeters inside this futuristic looking ported enclosure. There is a USB and Aux ports and external power supply input on the back of the speaker. I do see this as a design flaw of the speaker, but it uses 8 alkaline type D batteries to run it for portability. These batteries are discharged overtime even if the speaker is off since they are slowly drained due to the speaker being kept in standby mode. This makes it quite impractical to swap out the large type D alkaline batteries so often if used regularly. Also the main drawback is that the speaker is put into power saving mode I assume since the bass response is reduced when running on batteries and the overall volume is lowered. Adding to that, the USB port on the rear will not charge other devices when the speaker is running on batteries. In the video I have the speaker's sound quality tested using the battery power (connected a 12V supply instead) against the external 18V power supply.
Once the speaker is opened up, I disconnect the battery input cables and the external power supply input. I will connect the new battery to the external power supply input instead.
The wiring is quite simple. I am using a latching LED switch to cut off the battery power when not in use. The wires from the charging port inside the speaker go directly to the battery. The battery goes to the switch, then to the step-up converter and then to the power input on the amplifier.
The voltage going to the amplifier must be above 14V. If the speaker is powered with less then 14V, it automatically goes into this power saving mode which reduces sound quality. Therefore using the step-up converter I raise the voltage from the battery (12.6V) to 18V, just like the external power supply would provide.
To build the battery I am using six 18650 cells in a 3S2P configuration to produce 12.6V and around 4.5 Ah of capacity. The cells are welded together using the portable Sequre SQ-SW2 spot welder. The welded cells are wired to a 3S 10A BMS module for balancing and protection.
Once the battery is assembled, the speaker can be put back together.
Personally I love how this speaker sounds. Even compared to the next generation Go+Play. Also, this older speaker now has more than double the battery capacity compared to the new speaker which will result in speaker playing without having to charge for many hours.
Thank you for watching! - Věda a technologie
After the conversion the BASS was super good!!!!
Nice craftsmanship!
Thanks!
Nice work! Thank you for the detailed video of this conversion! I am going to make the same upgrade. Do you think it can be converted to USB Type-C as well? Maybe if I switch the original power socket to a USB-C PD charger module set to 12 Volts? Cheers!
Best conversion ever
Thank you!
Hi ! I have a Harman kardon go play 1 and i don t know if it will work also this conversion with my speaker.
Hi. Do you know what is the tolerance of the power input?
Will it tolerate a 19-20V input or will it fry the board?
As trying to get it to work from a battery station which has a 12V output.
As you wrote with 12V it will be on power save so there is a need for a step-up.
The original supply is a 18V which is not very standard.
Most Dell etc car chargers run on 19V And I have a Romoss 95W 18-20 eUSB car charger.
Might these work fine or would it be best to get a universal car charger with 18V output?
This seems more economical for the powerstation as the 220V inverter works with around 85% efficiency and bringing it down to 18 seems wasteful.
Hi, I'm not sure of the limit voltage that the input can accept. Only one way to find out, I guess. I would suggest you get a 18V supply. You can find one here: s.click.aliexpress.com/e/_DB57zvV
Saudação de Portugal !
Senhor, Donny Terek; - Dá para mostrar como fazer um tayser?
Grato pelo vídeo. ~ Abraço.
Hi, The max output power of the step up converter is only 2.5A, and at 18v the speaker draw more current because of its 90w Amp ? Does it work great at max volume? Thanks!
Hi! Sorry for the late reply.
That is a very good point, I actually have not thought about that myself. I will do some more testing on current draw when speaker is played on max volume. The speaker still works great at max volume using this step-up converter and is really loud but I will make sure to check if it has any difference when using a higher Amp converter.
Thanks!
@@DonnyTerek Hello! Yes do that, i wonder if the speaker can still run on its org dc adaper 18v? or it is just battery powered now all time and must use lion 12.6 v charger? these speaker have great sound the old ones, but only problem is the speaker foam that gets fragile by age and need service, the new one have rubber surrounds around speaker thats hold much much better!, so its not great idea to take that old speaker to the beach near sea water, the foam will shorten its lifetime and gets broken if u play the speaker hard :D
anyway nice quality work :)
@@mybmw2008 The speaker can no longer run on the original 18V power supply since it is wired directly to the charging board, it now takes 12.6V which is stepped up to 18V before reaching the amplifier. It could be wired to run on battery or 18V DC power supply but having such a large battery I don't see the need to do that.
Yes, this old model does sound very well. I actually like the sound better compared to the newer model which has a passive radiator instead of the ported enclosure like this one. The only drawback of the ported enclosure is lack of resistance to moisture and dust which can get inside of course. I haven't inspected the drivers up close but they seem to be OK from what I can tell. Good thing I'm far from the beach so it will make the speaker last a bit longer, haha!
Thank you once again, hope I won't forget to let you know how it goes with the testing of the higher amp step up converter.
2.5 A x 18 V is 45 Watts. Quite good power, no?
I like what you did. Probably you could get European money for environment protection because you're using old electronics and keeping them working?
Very nice work , thank you !!! 😊👍🏼
Thank you!
Hello, I have a question ... I have 2 HK Go Play speakers and I would like to replace the batteries with stronger ones, because the original ones have a small capacity ... Can I put in my speakers batteries dedicated to other speakers, e.g. jbl boombox?
Hi! You have to look at the rated voltage of the batteries and the plug polarity if they match.
I have the first gen go play which does not have Bluetooth and only 30 pin dock and 3.5mm aux on the back. I want to do the exact same thing you did along with Bluetooth upgrade.
Had a few of those myself too. You can definitely do the same job on that speaker. You could even include a Bluetooth audio receiver which would connect directly into Aux.
So does this speaker NEED these batteries? I saw other harmon/Kardon had their own battery pack to recharge. Does this one as we or does it only work with the batterys put inside (original or yout solution)?
This speaker is intended to be powered by a power supply which plugs into an outlet but you could also use non-rechargeable NiMh batteries which is a huge waste of materials to have it portable. My method shows installing rechargeable Lithium batteries that last way longer and make the speaker portable.
Have you checked the maximum voltage input for the amp circuit? I mean, wouldn’t it be easier to make the battery a 5s2p and leave out the boost converter? Then you probably even could use some hand tool batteries (makitas or what ever)
Hi, you wouldn't be able to fit a 5s2p pack inside the battery compartment. The boost converter does not add much complexity. Not sure what is the max input voltage of the amp is.
@@DonnyTerekHmm maybe not. I 3d printed an adapter for my 18v tool battery and and fed it to the 18v input and it works flawlessly, so the input voltage can be as high as 21v apparently. We’ll see if it holds up in the long run 😄
@@colamage That's great, I'm sure it will hold up just fine.
Thanks you helped me a lot! I wanted to buy some job site speaker and now i will have superior sounding (compared to other jobsite speakers) and powered with dewalt batteries 😅
Good work!👏👏👏🖖
Thank you!
У обеих звук хороший,мне мини нравится
Can you provide the schematics of the connection? Thanks I'm new to this electronics thing
Sure! Have just uploaded them, please check the description.
@@DonnyTerek many thanks!
Any way to do this if the charging input board is busted? I have an old powerbank which is only 3.7v, can i still use this automatic step up converter to gain 18v or will this be inefficient in some way?
Also what charger are you using?
Hi, you can attach a separate charging port. I doubt the step up converter will be able to bring 3.7v to 18v. I'm using a 12.6V charger.
What song is playing at the beginning of the video? Tell me please!!!
Artist: DivKid | Track: Digifunk
Hi I just wanted to ask why the power button on the speaker is not pressing right the button is like pushed in what can I do about it
Hi, sorry for the late reply, do you mean the button is stuck in pressed position?
Hi there, very nice video, the tool to strip wires and the welder is niceee! I'm surprised the Atlas drivers don't have neodymium magnets as the dock model does. I think neodymium sounds better IMHO. You can consider doing a upgrade of the drivers, I can send you some links of nice drivers, if you can order from Taobao where you live😊 cheers🍺
Hi, thanks! I don't feel the need of replacing the drivers, they sound awesome as they are!
This is the older hk go play 1 with the rare ferrite atlas versions. The newer speakers had the neodiym versions
c top !!!
Молодец)
I just don't understand why you had to use a switch? You could connect the Li-Ion battery pack to the normal battery contacts, and don't modify the construction. Can you explain this for me. Thanks.
Hi, sorry for the late reply. Unfortunately due to the poor design choice of this speaker, the batteries are constantly drained of power since they connect directly to the amp, which even when turned off using the original switch, draws around 0.5A of current. Adding an additional switch, cuts the power from going into the amplifier, saving battery life.
your video is very good
Many many thanks!
I got one those speaker no Bluetooth version iPod docking version. The speaker 🔈 membrane is decayed.
I had plenty of those not a while ago. Yes, on some of them I had the membrane decayed too but with a bit of glue it holds fine and fixes the speaker (for a while at least).
Very nice but how is the sound on these recharge cells compared to being plugged in the outlet?Is the sound thinner or?
Thanks. The speaker plays the same as if being plugged into the outlet since the battery pack is wired directly to the input source where the power adapter would plug in.
@@DonnyTerek why you had to use a switch than?
nice
Theo ý kiến của bạn thì loa nào cho âm bass tốt hơn
Hi, to me this older version sounds nicer. That's why I sold the newer Go+Play and kept the old one instead.
be carefull, on my go+play, the output red wire is the négative and black wire is the positive
I want to upgrade my Harman kardon go plus play battery, please make a video on it. The stock battery drains very quick.
Hi! There are many videos on this topic. you just need to replace the battery cells with higher capacity ones.
ou quon peut faire cela
JBL GOOD SISTEM
👍
You could have put twice as many lithium ions as you used, in that battery compartment to have a lot longer run time though
Sure, but this speaker can already play for around 16 hours on a single charge so I assume that's plenty for a portable speaker.
@@DonnyTerek i see your point 👍
@@DonnyTerek Hello channel creator. Is it possible to put batteries on the same speaker without Bluetooth and with a remote control? Is it possible to put a Bluetooth receiver on this speaker?
@@muslimmuslimov4707 Hi! Sorry for the late reply. Yes, you can use batteries to power the older version of this speaker which does not have Bluetooth. You can also connect a Bluetooth receiver if you are skilled enough for the basic wiring of it.
Puikiai padirbeta. :)
Dėkoju!
y si mejor te comparas unas pilas recargables y solo se las sacas cuando las tengas que recargar, sin desarmar la bocina
😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍
Very nice ♥️👍👍👍👍
Thanks 🤗
without a battery indicator light, for example 5 lights, the rechargeable battery is almost useless! you only know when the battery is full or empty.
Yes, that is well said but I wanted to leave the outer casing intact as much as possible without having to cut any holes for battery indicators.
@@DonnyTerek You did a good job. but I'm worried about some things.
After full charging, batteries will be charged to 4.2v.
4.2v x 6 = 25.2v.
the speaker has a power suppny of 18v in.
This type of charging circuit normally takes many hours to charge to 100%. It follows ohm's law
you could have some lights under the speaker grill. small diodes.
@@ford1546 Yes, each battery cell will reach 4.2V when fully charged. The entire battery pack will produce 12.6V because the batteries are connected in 3S2P configuration (3 packs in series of 2 cells in parallel). The boost module converts the 12.6V to the necessary 18V. It takes around 4 hours to fully charge the speaker.
Neat idea on the lights under the speaker grill. Might check on that.
@@DonnyTerek okay I understand. so you have connected the battery where the alkaline batteries should actually be?
@@ford1546 No, I actually connected the battery directly where the power supply would be connected since the speaker goes into low power mode if powered by batteries, which decreases the sound output quite a bit.
You must have done this before =)
Never before on this speaker.
@@DonnyTerek Isn't there a fire risk when joining the batteries? Saw that when Linus tech tip tried it and it caught fire twice..
@@ashystyle doing the parallel method on batteries is commonly used for upgrading battery powered things. It's not dangerous unless you didn't used a bms board for protection. I've been making battery packs mostly 3s2p and 4s3p for diy projects and I've never encountered any problems about them except the batteries dying for 2-3 years and need to replace them
@@justabasslover4404 Oh don't misunderstand me. I adore the right to repair and DYI projects as this. I wish I had the tools to do it my self. Where do you order good and OEM batteries from?
@@ashystyle local electronics shop, and sorry, I thought you were talking about him connecting batteries with the same polarity