Lumintop GT micro

[Texas_Ace]

@M4D M4X

my nitecore 650 mAh (black yellow) make 3,9A on the GT micro (and 3,8A on a BLF X5)
my shockli 660 mAh (yellow) make 4.95A on the GT micro (and 4.1A on a BLF X5)

unfortunately i fried something (i think a 7135) when using big wires in the head from my bench power supply 

the led ia always on (230mA) , but ramps up to high (~2A) above that and also jumps to turbo.

@TA: do you have an idea what i did blow?

If the higher modes work fine then your first guess sounds good to me, the 7135 fried. This can happen as the ripple from the power supply combined with the long leads can lead to massive voltage ringing. The first thing to go is usually the 7135.

[giorgoskok]

In what stage is this build ? Thanks !

[Texas_Ace]

Not totally sure, they have not exactly been giving me regular updates.

The prototype they sent me looks pretty much ready for production though save for the wire change. So I am guessing that production will be started after CNY.

[giorgoskok]

Thanns for the update TA .

[M4D_M4X]

@Texas_Ace

@M4D M4X

my nitecore 650 mAh (black yellow) make 3,9A on the GT micro (and 3,8A on a BLF X5)
my shockli 660 mAh (yellow) make 4.95A on the GT micro (and 4.1A on a BLF X5)

unfortunately i fried something (i think a 7135) when using big wires in the head from my bench power supply

the led ia always on (230mA) , but ramps up to high (~2A) above that and also jumps to turbo.

@TA: do you have an idea what i did blow?

If the higher modes work fine then your first guess sounds good to me, the 7135 fried. This can happen as the ripple from the power supply combined with the long leads can lead to massive voltage ringing. The first thing to go is usually the 7135.

thanks !

[gtxxl]

Hello which 14500, 3.7V Li ion cell is best suited GT micro feeler, how much mA is good ?

[teacher]

@gtxxl

Hello which 14500, 3.7V Li ion cell is best suited GT micro feeler, how much mA is good ?

I am going to use THESE, by Windyfire …. because I have them. But mostly because they are great cells. They come flattop or button top… I have some of both.
.
Windyfire 14500 IMR 600mAh - Flat Top

Unprotected, flat top. This is one of the best “high drain” 14500 cells available, outperforming even the venerable AW and Efest 14500 cells—check out the discharge comparison picture!

Read HKJ’s review of the cell.

Diameter:14mm
Height: 49.1mm

Manufacturer Cell Specifications:

• Nominal Capacity: 650mAh (0.2C discharge)
• Charging Termination Voltage: 4.2v
• Maximum Continuous Discharge: 6.5A
• Maximum Pulse Discharge: 9.75A
• Recommended Charge Current: 0.5A or 0.25A
• Maximum Charge Current: 1A
• Recommended Discharge Termination: 3v

[M4D_M4X]

Hello my dear friend!

Today i give you a first look on the Lumintop GT micro - a 14500 driven, Narsil controlled miniature thrower.

Up to 900 Lumen and a theoretical throw of 500m paired with a great user interface!

www.youtube.com/embed/vQO302LAPGI

[teacher]

Another great review Martin!! Thank you for sharing it with us.

Really looking forward to this new member of the GT Family……
………… the GT Micro.

[djozz]

Nice to see the GT micro in someone’s hand for a size impression. Thanks for the review Martin.

(in the outside shot session you showed the X5 but you call it the X6)

[gtxxl]

@teacher

@gtxxl

Hello which 14500, 3.7V Li ion cell is best suited GT micro feeler, how much mA is good ?

I am going to use THESE, by Windyfire …. because I have them. But mostly because they are great cells. They come flattop or button top… I have some of both.
.
Windyfire 14500 IMR 600mAh - Flat Top

Unprotected, flat top. This is one of the best “high drain” 14500 cells available, outperforming even the venerable AW and Efest 14500 cells—check out the discharge comparison picture!

Read HKJ’s review of the cell.

Diameter:14mm
Height: 49.1mm

Manufacturer Cell Specifications:

• Nominal Capacity: 650mAh (0.2C discharge)
• Charging Termination Voltage: 4.2v
• Maximum Continuous Discharge: 6.5A
• Maximum Pulse Discharge: 9.75A
• Recommended Charge Current: 0.5A or 0.25A
• Maximum Charge Current: 1A
• Recommended Discharge Termination: 3v

Hello Teacher thanks for your Info, :+1:
Unfortunately the Windyfire 14500 IMR 600mAh cells is not Available in Germany, (Germany (NO BATTERIES) | Germany has been temporarily suspended.)
That’s why I ordered these cells. Enercig (Tensai) TN1450HP - 650mAh 3,6V - 3,7V Li-Ion-Cells. - 6,5A/13A
https://www.akkuteile.de/lithium-ionen-akkus/14500/enerpower/enercig-tn14500hp-650mah-3-6v-3-7v-pluspol-flach-li-ionen-akku/a-100117/

[Reignman]

When and where to buy??? I’m in.

[teacher]

@gtxxl

Hello Teacher thanks for your Info, :+1:
Unfortunately the Windyfire 14500 IMR 600mAh cells is not Available in Germany, (Germany (NO BATTERIES) | Germany has been temporarily suspended.)
That’s why I ordered these cells. Enercig (Tensai) TN1450HP - 650mAh 3,6V - 3,7V Li-Ion-Cells. - 6,5A/13A
https://www.akkuteile.de/lithium-ionen-akkus/14500/enerpower/enercig-tn14500hp-650mah-3-6v-3-7v-pluspol-flach-li-ionen-akku/a-100117/

My pleasure gtxxl. . The ones you ordered should work great. :+1:

[Smokecutter]

Interested please.

[dotBLF]

Definitely in for one or two, imagine this with a White 1

[lotrbfme]

Any update on this ?

[lmcmann]

@teacher

@gtxxl

Hello which 14500, 3.7V Li ion cell is best suited GT micro feeler, how much mA is good ?

I am going to use THESE, by Windyfire …. because I have them. But mostly because they are great cells. They come flattop or button top… I have some of both.
.
Windyfire 14500 IMR 600mAh - Flat Top

Unprotected, flat top. This is one of the best “high drain” 14500 cells available, outperforming even the venerable AW and Efest 14500 cells—check out the discharge comparison picture!

I tried searching in here and didn’t see an answer. Should we get flat or button top for this light?
Thanks for the suggestion on a cell.

Larry

[teacher]

@lmcmann

@teacher

@gtxxl

Hello which 14500, 3.7V Li ion cell is best suited GT micro feeler, how much mA is good ?

I am going to use THESE, by Windyfire …. because I have them. But mostly because they are great cells. They come flattop or button top… I have some of both.
.
Windyfire 14500 IMR 600mAh - Flat Top

Unprotected, flat top. This is one of the best “high drain” 14500 cells available, outperforming even the venerable AW and Efest 14500 cells—check out the discharge comparison picture!

I tried searching in here and didn’t see an answer. Should we get flat or button top for this light?
Thanks for the suggestion on a cell.

Larry

I can’t say for sure, I would ’think’ either one would work. Maybe M4D M4X can answer that question.

[M4D_M4X]

the driver has a raised button with 5mm diameter - so i think most cells would work
but if the shrink does cover the button ....

[gtxxl]

I think a Flat Top Cell, on the driver can work.