Vapes Mighty battery change.

[Grumbleweed]

An old Mighty a pal bought new, sold to me and bought back, only to be sold to me again and it's had some use, the interweb suggested it used 3300mah when in fact they're 2700mah ones, the replacements have a slightly higher capacity, there's also some heat damage on the case as the case has broken where the screw heads are.

I've seen 3500mah used as replacements but currently can't find any heatshrink big enough, so this evening I'll practice soldering on one of the old batteries, I've drawn polarity on for my future reference

Discussion & advice most welcome

 

[MC Overgrow]

I admire your determination and I hope you can rescue the mighty. @OldBloke will be along in due course with some tech support. Im sorry I can’t help but how is the Aris ultra?

 

[Grumbleweed]

I admire your determination and I hope you can rescue the mighty. @OldBloke will be along in due course with some tech support. Im sorry I can’t help but how is the Aris ultra?

I did a lol at your image but the Aris Ultra is good, it came with 6 capsules and will chong 5 of them from a single charge I'm not so sure about the bubbler it came with though but am pleased with it, small enough to take out and works properly!

 

[MC Overgrow]

I did a lol at your image but the Aris Ultra is good, it came with 6 capsules and will chong 5 of them from a single charge I'm not so sure about the bubbler it came with though but am pleased with it, small enough to take out and works properly!

Good stuff, hope it hits the spot and keeps you away from combustion.

 

[Grumbleweed]

Good stuff, hope it hits the spot and keeps you away from combustion.

It served me well today as it did a 40 mile round trip in my rucksack and felt discreet & effective when I used it, the Mighty will hopefully be for taking to a mates as it's better for bigger sessions and the Da Buddha (15 years old & and just got out on Christmas eve) reaches where the other two don't.

I've found the bubbler thing for the Aris drips water if filled over a cm deep, that moistens the bud which burns/vapes badly, I've had it on the Da Buddha whip and had issues.

 

[Grumbleweed]

Waiting on the Amazon man to fetch me some heatproof tape, should have ordered it yesterday but thought Screwfix et al would have some, but no, not a chance but my boy was doing a today order and got me a roll, and some gauzes to be delivered before 10pm.

And although it's years since I've bought a bong it appears my town has a severe bong shop shortage these days

 

[MC Overgrow]

Waiting on the Amazon man to fetch me some heatproof tape, should have ordered it yesterday but thought Screwfix et al would have some, but no, not a chance but my boy was doing a today order and got me a roll, and some gauzes to be delivered before 10pm.

And although it's years since I've bought a bong it appears my town has a severe bong shop shortage these days

I can’t do electrics so I’m watching this in fascination & fingers crossed that you win. Hope the vaping is going well?

 

[Grumbleweed]

I can’t do electrics so I’m watching this in fascination & fingers crossed that you win. Hope the vaping is going well?

The vaping's going too well as I'm no further on, tho the tape arrived, I think I should take the heater to bits while it's open to clean it as well, it'll be as good as new if it works

 

[OldBloke]

How are you getting on? Been ill so didnt see this thread.

 

[Grumbleweed]

How are you getting on? Been ill so didnt see this thread.

Aye I saw a mates daughter has lost the last 3 years school dealing with the effects of long covid sadly from chronic fatigue, I don't know how to respond to folk dealing with illness but that comes from what feels like the best part of my lifetime of folk asking me how my 'sugar' is, and that's never a simple answer so I always say 'sweet' which tends to kill the conversation

I couldn't start till I'd paid for it which I've now done so I've stripped & cleaned the oven and am going to see how the old nickel battery strips tin with leaded solder, I've heat sink tweezers to go to the terminal side and will practice on the old cells first as I've 'de-wired' them, and there's the case to fix as the plastic's melted where the screwheads sit so they don't hold the 2 halves together, hopefully superglue is the answer otherwise it's glue in plugs and longer screws.

Edit, tinned terminals.

Edit edit currently charging, or appearing to charge.

 

[greenthumb]

The important step in this procedure is to transplant the old thermistor (4 small black leads) to the new cells.
Many of the error codes on mighty/crafty are down to these thermistors failing.
If anyone has a value in ohms for this thermistor then i will find a UK supplier.

 

[Grumbleweed]

The important step in this procedure is to transplant the old thermistor (4 small black leads) to the new cells.
Many of the error codes on mighty/crafty are down to these thermistors failing.
If anyone has a value in ohms for this thermistor then i will find a UK supplier.

The schematic would be handy for that but a search suggests 10k ohms "For monitoring 18650 lithium-ion cells, the industry standard is an NTC (Negative Temperature Coefficient) 10K Ohm thermistor. This specific resistance value is universally recognized by Battery Management Systems (BMS) and smart chargers", I can see 'Vishay' ones at 68p

This one's no longer showing error 004 luckily and the batteries charge and it works fine, better taste too as I cleaned the heater oven and airways.

 

[MC Overgrow]

The schematic would be handy for that but a search suggests 10k ohms "For monitoring 18650 lithium-ion cells, the industry standard is an NTC (Negative Temperature Coefficient) 10K Ohm thermistor. This specific resistance value is universally recognized by Battery Management Systems (BMS) and smart chargers", I can see 'Vishay' ones at 68p

This one's no longer showing error 004 luckily and the batteries charge and it works fine, better taste too as I cleaned the heater oven and airways.

I have no idea what any of these posts mean but I’m totally impressed, well done & enjoy

For your next challenge I think you should try to build a diy ball vape out of an old iron.

 

[Fiddlesticks]

The schematic would be handy for that but a search suggests 10k ohms "For monitoring 18650 lithium-ion cells, the industry standard is an NTC (Negative Temperature Coefficient) 10K Ohm thermistor. This specific resistance value is universally recognized by Battery Management Systems (BMS) and smart chargers", I can see 'Vishay' ones at 68p

This one's no longer showing error 004 luckily and the batteries charge and it works fine, better taste too as I cleaned the heater oven and airways.

Proper triumph.
Nice work Grumble. Also thanks for sharing pics etc. All this will be useful for someone later down the road.
Who needs schematics when you have skills such as yours. Impressive stuff.

 

[Grumbleweed]

I have no idea what any of these posts mean but I’m totally impressed, well done & enjoy

For your next challenge I think you should try to build a diy ball vape out of an old iron.

Cheers it's funny you should suggest a ball vape as I've seen a PID & 'nail' on aliexpress for around £30 and had seen the 'pinky' bv before I understood what they were and what they did and have some stainless steel bar and a lathe to hand, I'll have a google at irons used as vapes later

New post automatically merged: Yesterday at 9:42am

Proper triumph.
Nice work Grumble. Also thanks for sharing pics etc. All this will be useful for someone later down the road.
Who needs schematics when you have skills such as yours. Impressive stuff.

Cheers, and if someone does follow this, leave the new batteries in their cases till ready to solder, put the old battery in the empty new case when done having peeled off the insulators to put on the new battery ends, and the yellow tape is 'Kapton' tape, heat resistant with silicon adhesive, mine's 'Koptan' but that's the risk of a quickie from Amazon.

Scientific experiment today, see how many bowls the new batteries gives me compared with the old ones

 

[MC Overgrow]

Cheers it's funny you should suggest a ball vape as I've seen a PID & 'nail' on aliexpress for around £30 and had seen the 'pinky' bv before I understood what they were and what they did and have some stainless steel bar and a lathe to hand, I'll have a google at irons used as vapes later

I like where this is going. I am banned from buying a ball vape but I have a spare iron

 

[StationeryWilbury]

i've always thought the TinyMight2 is just a glorified car cigarette lighter

 

[Grumbleweed]

i've always thought the TinyMight2 is just a glorified car cigarette lighter

With a thermostat & a rheostat whanged in the circuit.

An interesting thought for bowl 3

 

[OldBloke]

The schematic would be handy for that but a search suggests 10k ohms "For monitoring 18650 lithium-ion cells, the industry standard is an NTC (Negative Temperature Coefficient) 10K Ohm thermistor. This specific resistance value is universally recognized by Battery Management Systems (BMS) and smart chargers", I can see 'Vishay' ones at 68p

This one's no longer showing error 004 luckily and the batteries charge and it works fine, better taste too as I cleaned the heater oven and airways.

A tidy job, well done! You have engineering skills I didn't realise, all helps. I have looked for several vape schematics over the years and asked manufacturers. Nope, trade secrets, twats. I used to alpha beta test nic vapes and they were really hard to get circuit details from, despite asking me to soak test! You can get a clue to circuit layout using hi-res photos and researching each chips markings etc. Slow process.

In this case, not needed

@greenthumb Exactly those, thanks for posting, it's only when you dig in you realise you must take photos during stripdown so you know where trailing location sensitive bits go. Some have thermistors on the cells to feed temp data to charging circuitry.

 

[Grumbleweed]

A tidy job, well done! You have engineering skills I didn't realise, all helps. I have looked for several vape schematics over the years and asked manufacturers. Nope, trade secrets, twats. I used to alpha beta test nic vapes and they were really hard to get circuit details from, despite asking me to soak test! You can get a clue to circuit layout using hi-res photos and researching each chips markings etc. Slow process.

In this case, not needed

@greenthumb Exactly those, thanks for posting, it's only when you dig in you realise you must take photos during stripdown so you know where trailing location sensitive bits go. Some have thermistors on the cells to feed temp data to charging circuitry.

Cheers, I come from an engineering background and am prone to meddle

It has the same battery life as when it was new so the battery's larger capacity isn't being used but there's no fault codes showing, so I've declared it fixed, and I've certainly tested it