The making of the BLF UC4 charger: the start of a new venture, INTEREST LIST, UPDATE 3(Finalized UI and starting design)

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Joshk
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Joshk wrote:
Is this charger going to balance charge packs? Like an iMax B6 can?

Did I miss the chance to request this in time? Sad

bhstinger
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Joshk wrote:
Joshk wrote:
Is this charger going to balance charge packs? Like an iMax B6 can?

Did I miss the chance to request this in time? Sad

Charger is only for individual cells (1S), nothing assembled in series.
Just the beginning still. Blue is finalizing specs and discussing with mfgs soon.

Barkuti
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I do not mean to be disheartening but, fellows, please keep a look at the already long list of features and capabilities for the target price. Maybe some of you would prefer a “deluxe” version, don't you?

At this point BlueSwordM may want to start asking some really budget manufacturer like LiitoKala. I could also do it, @#$%. 

Joshk, balance charging? That feature requires quite a different design than the usual for independent slot devices. It would require to set any contiguous slot “in series compatible” with the previous one, or else stuff would blow up. Someone already did that with a Lii-500 and… magical smoke.

Lux-Perpetua
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adam7027 wrote:

Lux-Perpetua wrote:

@BlueSwordM:

Sorry for bringing this back to attention once again but is my request from ► here ◄ reflected in the feature list? In terms of safety when charging LiFePO₄ I'd really appreciate a charger that not automatically (re)starts with a 4.20V default. So, requiring a "push button xyz to start charging" would be a nice and inexpensive add on. Smile

On a side note: Should you or the manufacturer need any help with native German language support for the manual, let me know.

Cheers,

Thomas

+1, no autostart would be very nice.

 

I don't mean to be impolite but I still have no answer. Please can someone confirm if this feature will be part of the specifications or not? Thank you.

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Mooch wrote:

Will the requirements definitions (document) address accuracy tolerances, safety features, robustness/reliability, assembly quality, QC practices, etc.?

It’s often left to the manufacturer to do this but it can cripple a product if not done well enough, or to the level expected by the community. Defining it up front can also help with the cost analysis and any necessary adjustments to the feature set or MSRP.

+1 !

BlueSwordM
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@Lux-Perpetua, a partial feature has been written already in the form of a charger non-reset disabling between 5-10V, to prevent charging to restart, or during a sudden loss of power during charging. Basically, solar panel

One last minute change could be added, as someone else(and you directly) discussed in a PM at SecondLifeStorage:

Basically, you could have the ability to change chemistry on boot, NOT reset on any power loss(forceful battery removal before charging completion to your settings or blackout, same thing really), and will not resume charging unless manual input is used.

Only for lithium-ion chemistries though. NiZn is so niche it doesn’t even matter, and even then, charging with NiMH parameters isn’t dangerous.

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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Currently speaking with MiBoxer and DlYFull.

Anyone want to enter Skype with me?

I maybe need some help. I’m not too adept dealing with direct OEMs like DLYFull.

Reminds me of the start of my 1st Gen GB.

Ok guys, so as I expected, it would actually be better to make the charger out of aluminium since it would require way less units to move compared to plastic injection moulding(at least 40000pcs per year and optimal would be 50000pcs per year).

So yeah, we are going with aluminium.

49$US target price is set, which includes the power supply.

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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A new interest list has been set.

Who wants in?

1. 1x BlueSwordM
2. 1x AmishBill.
3. 1x OLd_gUY
4. 1x shirnask
5. 1x bhstinger
6. 1x Lux Perpetua

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

amishbill
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BlueSwordM wrote:
A new interest list has been set.

Who wants in?

1. 1x BlueSwordM


2. 1x AmishBill

DIY LT1 battery wrap image. "PDF on Google Drive":https://drive.google.com/open?id=1IHIEOi1NXu868IYNCzIM7D2Ulpxchmww

Fresh Sanyo NCR18650GAs already wrapped "for sale HERE":http://budgetlightforum.com/node/69120 if you like.

BlueSwordM
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Added.

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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Just state how many chargers you want, or need. :/

Base price without the power supply would be possible at 39$US, although we are not sure.

49$US is the price we are sure about.

Added: OLd_gUY

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

shirnask
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In for one at the moment

BlueSwordM
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Added again.

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

Lux-Perpetua
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I’m in for one BLF charger (with EU plug), too.

Thanks for your reply BlueSwordM. If you need any help with (German) translations, let me know. I use Skype, too.

BlueSwordM
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@Lux-Perpetua, no problem.

Will send you a PM shortly with some info to contact the important people.

I’m starting to design the manual now.

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

bhstinger
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In for one. Thanks Blue.

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BlueSwordM wrote:
Just state how many chargers you want, or need. :/

Base price without the power supply would be possible at 39$US, although we are not sure.

49$US is the price we are sure about.

Added: OLd_gUY

Yep!! In for sure (1X confirmed) Big Smile
OG

BlueSwordM
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Let’s choose a name shall we?

BLF UC4 Special Edition.

Any takers?

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

amishbill
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BLF Power Fire Extreme Type-R Si Amp Smasher!

DIY LT1 battery wrap image. "PDF on Google Drive":https://drive.google.com/open?id=1IHIEOi1NXu868IYNCzIM7D2Ulpxchmww

Fresh Sanyo NCR18650GAs already wrapped "for sale HERE":http://budgetlightforum.com/node/69120 if you like.

Barkuti
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BlueSwordM wrote:

Ok guys, so as I expected, it would actually be better to make the charger out of aluminium…

Great choice with regards to power dissipation. How does that affects cost?

BlueSwordM wrote:

since it would require way less units to move compared to plastic injection moulding(at least *40000pcs* per year and optimal would be 50000pcs per year).

Way less units to move? What does that means? Do plastic injection moulding factories require 40K pieces a year to start manufacturing? 

Kavin
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Add me to the interest list, I’m down.

amishbill
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Barkuti wrote:

……

Way less units to move? What does that means? Do plastic injection moulding factories require 40K pieces a year to start manufacturing? 


Making the molds for injection molding is ridiculously expensive, and downtime on an injection molder to get them setup and running isn’t free either. You need to know you can move a LOT of a product to cover these costs at a reasonable amount per-unit.

My guess is that the cost to cast them in aluminum is more reasonble per-unit at the quantities they think they’ll be able to sell per year.

DIY LT1 battery wrap image. "PDF on Google Drive":https://drive.google.com/open?id=1IHIEOi1NXu868IYNCzIM7D2Ulpxchmww

Fresh Sanyo NCR18650GAs already wrapped "for sale HERE":http://budgetlightforum.com/node/69120 if you like.

anonymous_user
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Count me in for one.

mitsuki08
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Interested

gkushev
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Interested.

1stein
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Count me in for BLF Power Fire Extreme Type-R Si Amp Smasher (where is the ‘TURBO’ phrase? Angry )

Lux-Perpetua
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Barkuti wrote:

BlueSwordM wrote:

Ok guys, so as I expected, it would actually be better to make the charger out of aluminium…

Great choice with regards to power dissipation. How does that affects cost?

BlueSwordM wrote:

since it would require way less units to move compared to plastic injection moulding(at least *40000pcs* per year and optimal would be 50000pcs per year).

Way less units to move? What does that means? Do plastic injection moulding factories require 40K pieces a year to start manufacturing? 

Not sure if my assumptions make sense but I presume that this charger could draw a lot of attention once it's on the market. With a target price of about $ 50 this may cause quite some new competition with regard to current high quality chargers. I wonder if using aluminum would not increase the material costs. In terms of heat dissipation while discharging this is however a nice move.

 

Side note: I know it's too late already for adding more features too the very large feature list. I'm not sure if terms like "factory voltage calibration" or "user defined voltage calibration" have been brought up already. The SkyRC MC3000 lets users calibrate their device for more accurate voltage readings.

I_like_lamb
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Please mark me as interested.

Grigio
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In for one.

The BLF Smart Battery Charger or
The BLF SBC 1 or
The BLF SBC One

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Interested!!

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