The making of a BLF charger: the start of a new venture

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Rexlion
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Joshk wrote:
WalkIntoTheLight wrote:
I worked out the probability that you’ll see anything from this project, and it turns out it’s only 2.718%.

That’s a very precise number. Show your math please.


Perhaps he simply asked Spock to calculate it. Wink
Joshk
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BlueSwordM, is there news on this project?

BlueSwordM
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Yeah, something like a modified RC3000 is out of the picture.

@WalkIntoTheLight, as I’ve said before, if the additional features don’t work out, then the basic adaptable voltage charging(3,60-4,20) and very low current voltage recovery will be the only features implemented.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

BlueSwordM
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@JoshK, not until Wednesday next week.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

bmengineer
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BlueSwordM wrote:
Yeah, something like a modified RC3000 is out of the picture.

Why is that?

Find all my reviews of flashlights and more gear at www.bmengineer.com

BlueSwordM
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Cost…

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

Sidney Stratton
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Joshk wrote:
In HS and college science they teach that only the last digit is non-precise. So if I say I have 2.5 gal of gas, it’s understood it could be 2.48 or 2.54. But if you say you have 2.500 gallons of gas, then it’s a fact that it was measured to at least the hundredth of a gallon.

So when you say “I worked out the probability” and the answer is 2.718%… that is fascinating to me.

Perhaps he tallied all the options, say 32 of them, and gave ‘a not probable’ value of 1%; to a ‘probable’ value of 100%; thus creating 3200 total points of which he subjectively added up some 87. This gives a ratio of 87/3200 = 0.027188 or 2.718 % chance of fruition.

Not defending WalkIntoTheLight, just pointing out what he could have done…

WalkIntoTheLight
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Sidney Stratton wrote:
Joshk wrote:
In HS and college science they teach that only the last digit is non-precise. So if I say I have 2.5 gal of gas, it’s understood it could be 2.48 or 2.54. But if you say you have 2.500 gallons of gas, then it’s a fact that it was measured to at least the hundredth of a gallon.

So when you say “I worked out the probability” and the answer is 2.718%… that is fascinating to me.

Perhaps he tallied all the options, say 32 of them, and gave ‘a not probable’ value of 1%; to a ‘probable’ value of 100%; thus creating 3200 total points of which he subjectively added up some 87. This gives a ratio of 87/3200 = 0.027188 or 2.718 % chance of fruition.

Not defending WalkIntoTheLight, just pointing out what he could have done…

Guys, it was a joke. The number I picked is just e (Euler’s number), expressed as a percent. I thought pi would be too obvious.

amishbill
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I don’t think anyone has mentioned the Adeaska VC4 Plus.
( Review )

I haven’t seen much if any mention of this charger here. It looks like it already has multiple charge cutoff points, can do 4 26650 at a time, can charge relatively fast, and the base model doesn’t cost a small fortune. The only thing I can’t tell is how long a cell it can support. As a Sofirn Protected 21700 owner, I’m interested in that answer.

BlueSwordM
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Unfortunately, it doesn’t have very low current voltage recovery, or adjustable charge voltage.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

Sidney Stratton
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I had previously purchased the SQ2 from Adeaska. A 2 bay 1/2 & 1 amp multi-charger. After a while, and after purchasing an inline USB tester, I realised the unit was defective. There never was a constant current delivered and the mode selection was inverted with two cells; i.e. with two batteries selecting 1 amp delivered some 400 mA (peak). Had to select 0.5 Amp to get some 800 mA. From ZeroAir review, this model is better.

As the logistics were erroneous and the current would constantly vary, I opted for a MiBoxer C4-12. The Miboxer has an equally nice display and IR test (the SQ2 doesn’t have IR). The VC4 has independant buttons / status display for all bays and IR. Zeroair mentions the sliders are ‘scratchy”; which I had greased.

@Blue: It does have Battery Activation – see the blued manual in review.

BlueSwordM
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@Sidney, but we don’t know about the currents used, and they aren’t settable.

I’m not only making this charger for BLF, but also for SecondLifeStorage/DIYPowerWalls.

I’m soon going to do a feature freeze.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

Sidney Stratton
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@amishbill; ZeroAir mentions 70 mm length. My SQ2 has 71.8 mm sliders. If this can be of any help.

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