Underrated comment 😎👍

And now they make great batteries! Finally!

These batteries die quick

Nah my dad has 2 2ah batterys which has never been repaired in 10years and still work perfect

Might be dangerous on the battery, as the Ni-MH based tools don't have the current limiting.

Plastic does not conduct heat well, you probably want at least aluminum which is what radiators are made from.

@@drscopeify It's not perfect, but a plastic optimized for (relatively) high heat conductivity is always preferable to bog standard plastic used in other battery casings. Twice the heat conductivity is still twice the heat conductivity.

@@marcelvos7931 Yeah but plastic does strange things under heat like warp, expand, crack it seems like it would cut life down drastically of what the part is designed for

@@drscopeify Not as long as you keep the temperature below designed spec. Lithium cells can't take much heat as well and will always be hotter than the surrounding plastics. We're not talking about oven isolation material. The Samsung INR21700-40T cells used usually have a temperature cut-off of 80 degrees Celsius, so it doesn't matter if the surrounding plastic does strange things when getting above 100 degrees, as long as the material can handle the max achievable temperature of the specific application.

@@drscopeify They can add stuff like graphite to the polymers to make it heat conductive and glass fiber to make it stronger/stiffer. "Thermally conductive polymer-compounds can replace metal, ceramics and conventional plastics for heatsensitive applications. They are more and more used in various heat-sink applications such as electronics, housings or in automotive parts".. "The mixture of a polymer and one or more fillers is called compound. The polymer functions as a binding matrix, which is mixed with the filler particles. In this investigation high loads of graphite are used to realize high thermal conductivities."

With Bosch tools, the BMS board is in the tool itself instead of the battery pack.

It's a bit thicker but it'll be shorter.

This is so crazy because I literally was just looking for reference images as I have been making my own Milwaukee Cp4.0’s but still get irritated Milwaukee didn’t use this staggering approach until the 12.0ah HO’s. The 8.0 HO’s were just. 2p stacked one on top the other as well. Such a waste

vuaeco better balance overall I think. Especially for the 6ah & 8ah Milwaukee’s,

Better hot on the outside (which means heat is conducted away from the cells) than hot on the inside and cool on the outside :)

@@marcelvos7931 touche'!! I've switch a lot of my tools over to Bosch these past few weeks. And they have more power than I had expected. I got the Freak GDX18V-1800C with 4ah Core, charger, bag for $53 at Lowe's. It has a but too much torque for a driver ((Edit: since getting the Bluetooth module, I've REALLY fallen in love with the 1800C impact. It's now my go to impact driver due to the soft start capabilities. I never liked the Bluetooth capabilities in other tools as they didnt do muxh for a tool.)) I've had a few bits get stuck in the quick release ((Edit # 2 Apparently the bits getting stuck was an issue I had due to the bit holder I was using.)). But it's way better in terms of power and quieter, than the 887 Dewalt impact driver. I got the mini shop vac (came with free extra battery charger, etc) and it EATS the 4ah in like 15 minutes. I have an 8ah Profactor, but it doesn't fit in the battery compartment when closed. So I'm disappointed in Bosch for that one. Next is the Miter saw, and next year, the left sided blade version of the Strongarm 7¼" circular/track saw... and another tool that is TBD if it is released.

I think it's part of individual cell voltage monitoring.

@@carterscustomrods I'd try the regular non-ProCore 10 cell batteries with the vacuum cleaner. It doesn't need the additional power that the ProCore batteries can provide over the regular ones, and the regular ones are both smaller (in 10 cell format = 5.5 or 8 Ah ProCore or 4 Ah or more regular) and cheaper. Keep the 8 Ah ProCores for powerful tools that need them. The 8Ah ones are a lot of battery (both in price, power and weight) for a mini vacuum. I use the GAS 18V-10L as a vacuum myself, and the 8 Ah ProCore does fit, although it is of course a lot bigger (and more powerful) than the GAS 18V-1 mini vacuum.

@@macvos sadly, here in the US (North American market), it seems Bosch has fallen already. I went all in with the Bosch lineup, and I'm not sure they'll even be here in a year. They've just stopped trying. They had several new tools set to release (in hopes to push NA tool brands above the 10% Worldwide profits barrier) but they just ghosted them, and we the tool users. From their kept blade strongarm, to new cordless routers, there were 20+ new tools set to come to NA market ... but then they were removed after the (horrible demonstrations) set up at World of Concrete this year. I was really waiting for the left blade Strongarm saw, as were thousands of others that I had hyped it up to. It was a left blade track capable plunge saw (designed for right handed users) and they had done press releases and even did a demo run at several trade shows in the US. Then all the sudden, it just disappeared. I asked Bosch about this, and they said "what saw? We don't know what you're talking about." And I was shocked... like they were trying to make me think I was crazy. 🤣 🤣 🤣. I had stocked up on batteries, awaiting this saw, because I only have use of my right arm, it makes a right blade track saw worthless for ripping Sheet Goods if you can't use it (the "right handed track saws") to your left side with your left hand. Then 1-2 months ago, Bosch products dropped in price a lot. Some by 50% as their new regular price. So, sadly, when this happens here in the US, it's a sign that the brand is going out of business. So unfortunately, I've dumped a lot of Bosch and am moving on to Makita full time. It's a shame. They had potential, and could've grown, but the new core line of batteries became obsolete really quickly with other brands using 36v, 40v, and even 60v. Plus Bosch just didn't market at all. Their strategies were just like "Ughh.. we'd rather not do the work of trying." So, it's heartbreaking to see. Especially since Bosch Worldwide is doing well, snd has so many great tools that the US never would've seen anyways.

I would dump Kobalt if Bosch makes 24V tools so I can run my Ebike with it! :D...No, I like my Kobalt. It's good quality, cheap, good warranty and best of all, all of my EV's run on Kobalt 24V batteries!

vuaeco. Do u use two in series for 48 volts? I have a fat tired ebike with a 750 watt geared hub motor. Really enjoy it.

@@billrimmer5596 Yes, 2 in series for 48V. I started talking about them at 16:30 in this video kzfaq.info/get/bejne/idyeebhkuLW6emQ.html

Converter is probably the best, unless you have lots of money AND need absolutely every kW/h of power you can get (e.g. off-grid, rural/inaccessible area, etc.). But hey, it's been 4 months, so maybe you've already found a solution. Cheers.

I replaced 2 cells in my procore 7ah. Two 20700 rotten cells because water got in there and i didn't notice. The battery works but the gauge which shows how much charged it is does not. Also no welding was necessary

@@yooo711 does the cell balancing and low voltage cutoff still work?

The same

@@mirekdudka9071 they're the same

Same problem… unfortunatly I cant seem to fix it. Perhaps hard wire charging directly to the cells? 🤪

Ive got 2 of them less than a month old same thing

I would bet ya some IC on the PCB inside the battery is blown or something is up on that front. Try to swap the board from another similar battery and test it , if you can not measure it out with a multimeter

Bosch offers 3 years factory warranty if you register them within 2 weeks after purchase. After those 2 weeks, you can contact them for warranty. I'd try that before going any further. A fresh new battery is always preferable to a repaired one.

@@Esoxsvecia It's already full at 20V

What for real? Think again about possessing the skills required to safely handle the battery if you are already blocked by a seal... that can be picked out with any sharp object.

I do to 2 batteries 1 month old bullshit

I'd contact Bosch. I've had a comparable problem before, which turned out to be a faulty charger (GAL 18V-40), which they replaced free of charge. It would charge one battery, but not the other. Another charger would charge both of them just fine... Really strange.

True, I just saw an interview with an Bosch representative - there is no balancing the cells! If the electronic on the maschine notices too much drift in the cells, the battery will be shut off. You must send it to bosch services ....

@@m.s.5914 They match all cells in pack with mAh rating, discharge and internall resistance .

Wrong, Metabo was first with 21700 cells lon before Bosch copied them.

@@ITubeTooInc Metabo is not manufacturing cells so it's more like who went sooner into production, or it's just a date on the paper. People in the field of batteries for powertool companies like Bosch are not stupid , they know what's on the market or what will be.

@Gabriel Kozsar I know, but he said Bosch was the Bosch were pioneer on those 21700 cells and everybody else were copy/pasting them, which is obviously not true as Metabo introduced 21700 cells in power tools long before Bosch did. And actually Metabo had 21700 cell batteries on the market long before Tesla claimed to have "invented" this new cell format specifically for their cars to replace their 18650 cells. Almost all of the pro power tool manufactures have use the exact same Samsung INR cells anyway for years, at least when it comes to 18650 cells. Some have used other li-ion cell manufactures like Sony, Sanyo (now owned by Panasonic), Molicel and A123 earlier but for several years most of the big players like Milwaukee, Makita, DeWalt and Bosch have used the exact same Samsung 18650 cells. The only pro power tool manufacturer I can think of, who also manufacture li-ion cells is Panasonic, but they are a small power tool player in most markets although they are one of the biggest players in the li-ion battery market, with Tesla as their biggest customer. Starlock, one of the other Bosch inventions he mentions, was actually co-developed by Bosch and Fein. Fein is the inventor of the multitool / oscillating tool which now also use the Starlock interface. And although the SDS system was developed by Bosch, it was just and improvement based on the TE system introduced by Hilti in 1960. Hilti's original 10 mm TE-D and 18 mm TE-F shanks can be used in SDS-plus and SDS-max chucks respectively but not vice versa while the newer TE-C, TE-T and TE-Y are fully compatible. All the pro power tool manufactures have made inventions that has be copied and even improved by others and many have become industry standards. It’s not like everyone else is just copying Bosch, they are copying just as much from others.

@@ITubeTooInc I can not disagree. I know this stuff too.

@@ITubeTooInc True, although Bosch do seem to be ahead of the curve and a major innovator in interface design (and things like Flexiclick), with X-Lock being the latest (IMO huge) improvement. Luckily, Makita have followed in their steps, so I have good hope X-Lock will become just as successful as SDS and Starlock. Brands like DeWalt and Milwaukee seem to be fine with reusing old interface designs, following brands like Bosch and Hilti only when their innovations have been proven for years. They seem to largely focus on power output and big numbers (54V!), although DeWalt did positively surprise me with Powerstack.

Bosch Professional offers 3 years factory warranty on both tools and batteries. I'd contact them for a replacement or repair. Here in the Netherlands, their service is pretty quick and good.

Correct had 2 festool vac burned out on me and that’s a $800 vac

First i want them to use omron switches in their tools with rubber bellows to keep moist and dust out

@@lukie4ever true!!! It's bizarre that they did it with their corded tools, and a few cordless (primarily rotary hammer drills) but not every tool. Even the batteries are a bit exposed on the bottoms. As well as the battery ports on several of their tools. It's an easy fix, but I shouldn't have to do it. So I feel ya. However, they do listen to their tool users. So just a few people seeing that can get them to correct it. If those who test prototype tools for them were allowed to know each other, and converse between each other, we would be able to see if it's an issue across the entire tool, and have them fix it. Sadly, testers aren't allowed to open the tools to see any internal issues.

@@carterscustomrods I'm a makita man but when i got the bosch 18v flexiclick i was sold but then i looked inside because i was curious and got disappointed by the switch because that's the weak link in the tool there, the makita's have a bellow in almost every tool

That doesn't take away the fact that i still love using my bosch

@Trump is a Homosexual more like Texan, Korean, South African?..

Probably Vietnamese. Possibly Laotian or Cambodian.

😂😂😂

You can only pull them out if the strip on the other side is already removed. Just touching two loose ends does nothing. If the plastic is broken... I would be careful about what you do, because if you do manage to let two cells touch sides while the copper strips are still all connected, you are shorting out one cell.

I think milwaukee can parallel 3×21700 in the bottom portion of m12 battery pack with 3×18650 in the grip portion.

@@technologicalsingularity1788 You can't mix match and parallel them together that way. The small ones will run out first and the big ones will become a charger for the small ones and soon it will heat up and explode. Just 3x 21700 on the bottom only would suffice. Leave the top portion empty just like the "penis" on the Ryobi battery.

That's a good point. But I'm afraid the entire M12 line might be gone once the M18 gets smaller and stronger. There's no point to get the M12 when you can get the M18 that is almost the same size.

@@vuaeco 3 cells will always be smaller than 5 cells. You can't physically fit 5 cells in the handle like the M12 or the previous generation Makita 12V tools, so the pack and tool will inevitably be larger (e.g. DeW***). As the workforce ages, the demand for small tools will only continue to rise. Besides electrical efficiency, which is not overly important with tiny brushless motors and lithium batteries, there's no need for higher voltage with the small tools. My DeWalt brushed-motor impact with -20V- 18V li-ion pack already strips or snaps things more often than I'd like. If I could do it over again, I'd get those older Makita mighty mites! I've used the impact and drill, and they were excellent.

@@vuaeco Good point. I didn' think about taht.

What if your tool only draws 20A max? Then the 30T means your battery will die sooner for no gain.

Yeah, but what tool will use that? For those insane-power tools you can use the 8Ah, double 30A makes 60, haha.

@@fun_ghoul 20amp tools, you can figure out cuz 8Ah battery only last you 24 minutes where 12Ah battery will last you 36 minutes when i said discharge rate high which allows some of impact to draw more current for torque they put out doesn’t mean they say at that plus Samsung 30T can handle higher heat, runs cooler than 40T version

@@jcvjcvjcvjcv 30Amp it 60Amp tools then you would move to MX series Ah is Amp hour how much it can let you draw

@@TranTek In cases you need this insane high draw, you might just as well get the 8 Ah battery, making a 3 Ah 5S with 21700's rather useless.

True. The Kobalt ones are 21.6V nominal * 4 Ah = 86.4 Wh, with the Bosch being 18V nominal * 4 Ah = 72 Wh. The Kobalt ones therefore have 20% more capacity.

Capacity and max power output are inversely related. Larger capacity cells have less power output and vice versa. The most powerful cells are currently between 3 and 4 Ah, with 5 Ah cells having significantly lower power output. For example, the Samsung INR 21700-30T (3 Ah) has a proven continuous discharge rate of 35A. The INR 21700-50E (5 Ah) is limited to 9.8A continuous discharge. 4 Ah seems to currently hit the 'sweet spot', with power closer to the 3 Ah cells but capacity between the 3 Ah and 5 Ah cells.

What else? Molicel, Samsung 50s?

@@hansdampf1968 at present, the Samsung 30T looks to be the better choice. Lower capacity, but more power deliver and more consistent power delivery, or the Molicel P42A or LG HG6 (20650j if you’re using 21700 sized cells. Haven’t seen any info on newer Samsung 21700 cells, but definitely not the 50E, not enough current delivery for a power tool.

@@geoffstrickler I wonder if you have any experience with DeWalt batteries yet? The recent Bosch ProCore 12Ah 18V can deliver 105Amp for like 5 minutes until it reaches a critical temperature of around 90°. I will aim for those, using them for electric motor DIY projects. The Samsung 50s are used in the new Metabo 10Ah tool packs, looks well build too but the lack of information made me select a different company. Milwaukee also looks promising with their 12Ah 18v battery using S40t but the price is very high compared to Bosch and other companies.

@@hansdampf1968 the M18 12.0 compensates for the 40T’s power delivery issue by being a 3P design. That mitigates the issue since max power draw per bank is reduced below the sustained capabilities of the 40T cell. I don’t know which cell the new Metabo is using. It’s definitely not the Samsung 50E, which is he only 5.0Ah cell I’ve seen data on. I got out of the DeWalt line 7 years ago, so I have no direct experience with their modern batteries.

@@geoffstrickler True, the Bosch ProCore are great! Samsung 40t cells, 3p a 35amp = 105amp. As I said Metabo 18v 10Ah using new 21700 NRF Samsung 50s cells. You will have troubles finding information but have a look at this community table: docs.google.com/spreadsheets/d/1y2jpoUwTOCbt6W3V7BTANON0qFRX7MPgF3T8NVuv8oo/edit#gid=0 Here is a test of the Samsung 50s: kzfaq.info/get/bejne/eteUfruYnLmrlWg.html&lc=z23rth5iwnj2gzkleacdp431wcusq5rypsanogtn44hw03c010c.1624891594054020

Ha! Maybe a tsunami in the bathroom? That usually comes after an earthquake! :D

@@vuaeco That was a sex joke, right? LOL

@@fun_ghoul It depends on how wild your imagination goes! :D

eBikes batteries from Bosch are different than the tool batteries.

No, Tesla uses 15A output cells 5000mah

@@1FishinAddict Tesla have THOUSAND of cell, not need to put high drain battery, just need capacity. Having that many battery have enought output performance.

2022 update: true, although they seem to be moving towards 46800 now. That cell will most likely be too large for powertools though.

I do like that, unlike a lot of other brands, most of their power tools are still made in European countries or Malaysia, which I heavily prefer over China.

That ain't the point, mate. And that has nothing to do with one's intelligence. :D

Thank for the video!

I try it, nothing happen, its discharded, need recharge after 8 minutes. Battery is still cool.

40A is bupkis. Don't you know what the vaping clowns are getting out of these cells?

That sucks. Have you contacted them? Here in the Netherlands, their service is pretty decent. Hopefully they can replace your batteries against reduced cost or reimburse you.

@@macvos no they won't replace them, because it's past three years.

@@JustforFun-cb7bo That sucks. No attempt to compensate in any way then?

@@macvos we have one of the worst costumers service and after sales here, if you buy something anything no one will compensate you easily.

@@JustforFun-cb7bo where are you from?

Thank you, Captain Slobvious.

Maybe it's operator error. Do you discharge your batteries to fuck all often? Do you leave them dead overnight, and charge the next morning on site? Do you live somewhere with a real winter, and leave the batteries outside or in an unheated garage? Or do you, on the contrary, never use them but keep them fully charged all the time? There are lots of ways to fuck up a lithium ion battery. Just sayin'.

@@fun_ghoul i hear ya. my tools do get abused a bit, but thats what they are for. my other bosch batteries have had no issues. i think theres a problem with these pro core batteries. the thin copper connections are quite likely a terrible idea. id happily have slightly larger battery if i didnt die on me so quickly

@@dylannewlands6122 Yeah...sorry for jumping to conclusions. I forgot about that copper shit...wasn't that supposed to be an improvement? Oh, technology... 🙄

@@dylannewlands6122 What's the problem with the copper? Is it corrosion or wear? Did you open up the batteries to check what's the culprit?

@@marcelvos7931 haven't opened them up. I'm still battling to get them sorted under warranty. From research the way thier batteries so small is the thin copper strips instead of wire. If I don't get them sorted under warranty I will be sure to open them up and post the verdict. Honestly been running Bosch for 6 years plus. After this shit I'll never give them another dollar.

No question that Amerikkkan propagandists worked hard to make everyone in communist countries idolize Nazi German products. Your memories are your own, and you're entitled to them, but let's not be naïve about the source of this obsession with consumer goods. Also, you clearly grew up in the 1980s, which is hardly a representative period for communism in general, or Romanian communism in particular.

If it's smaller and lighter but still serves the exact same purpose then I'd take it any day. If you have to carry your tools around all day everyday, you'll start to appreciate it. :D

@Albert Rampo you sound like a moron that has a garage full of black and decker tools stick to hanging up curtains and pictures for your wife you know nothing about tools bozo

progress is made discovering uncharted territories

Did you try another charger ?

@@GabrielKozsar I have 2 pieces of working Bosch ProCORE18V 4.0 Ah and Bosch ProCORE18V 8.0 Ah with which I tested the charger. In addition. These 5 defective battery have something in common, which is that they do not show the charge status. All LEDs are dead, most likely a serial electronics fault???

@@Popajaja I would guess the PCB inside the battery then. Blown BMS IC. Have those 5 batteries die with a single tool ?

@@GabrielKozsar I have several Bosch machines and all the batteries worked well and did not discharge below 2.5V per cell. It is interesting that all defective batteries have very close production dates, as if it were a serial error? A small tip, when changing the cells of the Bosch ProCore, it is useful to heat the plastic for a short time (the expansion of plastic is x times greater than that of metal). Greetings from Switzerland

@@Popajaja Seems like a bad batch. Maybe a problem with one of the IC suppliers? What did Bosch say?