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Laser Barrels V2. GB. Second run. Kryton Groove
- Thread starter Kenom
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Re: Laser Barrels V2. GB. Second run. Kryton Groov
How much current will an 18650 put out for maybe 10 seconds at a time? I think this battery is similar to those used in hybred cars.
Mike
How much current will an 18650 put out for maybe 10 seconds at a time? I think this battery is similar to those used in hybred cars.
Mike
Kenom
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Re: Laser Barrels V2. GB. Second run. Kryton Groov
Yes mike the 18650 is the battery that is found in both hybrid cars and in some laptop batteries. It wes the main reason that these batteries were so hard to find and so expensive for a while. Now that's not the case.
Yes mike the 18650 is the battery that is found in both hybrid cars and in some laptop batteries. It wes the main reason that these batteries were so hard to find and so expensive for a while. Now that's not the case.
Re: Laser Barrels V2. GB. Second run. Kryton Groov
So, all I need to do is fill my truck bed full of 'em, and wire them to my starter motor, then a few solar cells on the hood - and then "energy independence"?
wow... I had no idea - just knew that they pack a wallop! I've been running my Big Red Kryton, with an 18650, quite a bit for more than a week and it's still going strong.Kenom said:
So, all I need to do is fill my truck bed full of 'em, and wire them to my starter motor, then a few solar cells on the hood - and then "energy independence"?
Re: Laser Barrels V2. GB. Second run. Kryton Groov
forgot the charger: TrustFire All-in-One Charger
DanQ
forgot the charger: TrustFire All-in-One Charger
DanQ
Re: Laser Barrels V2. GB. Second run. Kryton Groov
Sweet! Thanks for the link Danq.
I had no idea 18650s were used in hybrids... I wonder how cheap they'll become in the next few years since it seems they'll probably be produced more and more.
-Jonathan
Sweet! Thanks for the link Danq.
I had no idea 18650s were used in hybrids... I wonder how cheap they'll become in the next few years since it seems they'll probably be produced more and more.
-Jonathan
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Re: Laser Barrels V2. GB. Second run. Kryton Groov
Nice discussion but will they output 10 Amps for short periods?
Mike
Nice discussion but will they output 10 Amps for short periods?
Mike
Re: Laser Barrels V2. GB. Second run. Kryton Groov
Titre du document / Document title
Charge and discharge characteristics of a commercial LiCoO2-based 18650 Li-ion battery
Auteur(s) / Author(s)
ZHANG S. S. (1) ; XU K. (1) ; JOW T. R. (1) ;
Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)
(1) U.S. Army Research Laboratory, AMSRD-ARL-SE-DC, Adelphi, MD 20783-1197, ETATS-UNIS
Résumé / Abstract
We studied the charge and discharge characteristics of commercial LiCoO2-based 18650 cells by using various electrochemical methods, including discharging at constant power, ac impedance spectroscopy, and dc-voltage pulse. At 20 °C, these cells deliver 8.7-6.8 Wh of energy when discharged at a power range of 1-12 W between 2.5 and 4.2 V. Ragone plots show that the effect of discharge power on the energy is significantly increased with decreasing of the temperature. For example, energy of the cell is entirely lost when the temperature downs to -10°C and the discharge rate still remains at 10 W. Impedance analyses indicate that the total cell resistance (Rcell) is mainly contributed by the bulk resistance (Rb, including electric contact resistance and electrolytic ionic conductivity), solid electrolyte interface resistance (Rsei), and charge-transfer resistance (Rct). Individual contribution of these three resistances to the cell resistance is greatly varied with the temperature. Near room temperature, the Rb occupies up to half of the cell resistance, which means that the rate performance of the cell could be improved by modifying cell design such as employing electrolyte with higher ionic conductivity and enhancing electric contact of the active material particles. At low temperature, the Rct, which is believed to reflect cell reaction kinetics, dominates the cell resistance. In addition, galvanosatic cycling tests indicate that the charge and discharge processes have nearly same kinetics. The performance discrepancy observed during charging and discharging, especially at low temperatures, can be attributed to these two factors of: (1) substantially higher Rct at the discharged state than at the charged state; (2) asymmetric voltage limits pre-determined for the charge and discharge processes.
Journal of power sources ISSN 0378-7753 CODEN JPSODZ
Source / Source
2006, vol. 160, no2, pp. 1403-1409 [7 page(s) (article)] (28 ref.)
from Charge and discharge characteristics of a commercial LiCoO2-based 18650 Li-ion battery:Hemlock Mike said:
Titre du document / Document title
Charge and discharge characteristics of a commercial LiCoO2-based 18650 Li-ion battery
Auteur(s) / Author(s)
ZHANG S. S. (1) ; XU K. (1) ; JOW T. R. (1) ;
Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)
(1) U.S. Army Research Laboratory, AMSRD-ARL-SE-DC, Adelphi, MD 20783-1197, ETATS-UNIS
Résumé / Abstract
We studied the charge and discharge characteristics of commercial LiCoO2-based 18650 cells by using various electrochemical methods, including discharging at constant power, ac impedance spectroscopy, and dc-voltage pulse. At 20 °C, these cells deliver 8.7-6.8 Wh of energy when discharged at a power range of 1-12 W between 2.5 and 4.2 V. Ragone plots show that the effect of discharge power on the energy is significantly increased with decreasing of the temperature. For example, energy of the cell is entirely lost when the temperature downs to -10°C and the discharge rate still remains at 10 W. Impedance analyses indicate that the total cell resistance (Rcell) is mainly contributed by the bulk resistance (Rb, including electric contact resistance and electrolytic ionic conductivity), solid electrolyte interface resistance (Rsei), and charge-transfer resistance (Rct). Individual contribution of these three resistances to the cell resistance is greatly varied with the temperature. Near room temperature, the Rb occupies up to half of the cell resistance, which means that the rate performance of the cell could be improved by modifying cell design such as employing electrolyte with higher ionic conductivity and enhancing electric contact of the active material particles. At low temperature, the Rct, which is believed to reflect cell reaction kinetics, dominates the cell resistance. In addition, galvanosatic cycling tests indicate that the charge and discharge processes have nearly same kinetics. The performance discrepancy observed during charging and discharging, especially at low temperatures, can be attributed to these two factors of: (1) substantially higher Rct at the discharged state than at the charged state; (2) asymmetric voltage limits pre-determined for the charge and discharge processes.
Journal of power sources ISSN 0378-7753 CODEN JPSODZ
Source / Source
2006, vol. 160, no2, pp. 1403-1409 [7 page(s) (article)] (28 ref.)
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Re: Laser Barrels V2. GB. Second run. Kryton Groov
I think there should be a thread in the multimedia section called "Kryton Pictures" or something, and we should all share a couple of pictures of our krytons, or something. I would start it, but i haven't got mine yet.
I think there should be a thread in the multimedia section called "Kryton Pictures" or something, and we should all share a couple of pictures of our krytons, or something. I would start it, but i haven't got mine yet.
Kenom
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Re: Laser Barrels V2. GB. Second run. Kryton Groov
I've tried opening a thread for Kryton pictures. Essentially all the v1's look pretty much the same unless you paint it or something. Now the Kryton grooves, that's a different story. Each one is literally different.
I've tried opening a thread for Kryton pictures. Essentially all the v1's look pretty much the same unless you paint it or something. Now the Kryton grooves, that's a different story. Each one is literally different.
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Re: Laser Barrels V2. GB. Second run. Kryton Groov
Yeah, that would be good
Yeah, that would be good
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Re: Laser Barrels V2. GB. Second run. Kryton Groov
am sad. :'( is still waiting for mine :-/ :'(
am sad. :'( is still waiting for mine :-/ :'(
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Re: Laser Barrels V2. GB. Second run. Kryton Groov
Kryton Kryton I want my oompa loopma now
oh yea wrong flashback anyways hey Ken any news on the black unpolished grooves i'm starting to feine............................................
Kryton Kryton I want my oompa loopma now
oh yea wrong flashback anyways hey Ken any news on the black unpolished grooves i'm starting to feine............................................
Kenom
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Re: Laser Barrels V2. GB. Second run. Kryton Groov
I was not home when a delivery attempt was made today. Being as I was to have gotten a shipment last week, this is I'm thinking the remainder of the custom barrels. I'm a bit dissapointed as this should have arrived last week and not this week. However, since it is late, maybe he's included some of the other black and clear barrels in this shipment as well. We shall see. I'll try to stop by and pick up the package at the local ups hub.
Looks like I'm cursed to be tormented by people who love to put my stuff on the back burner while they do more important things than my orders. Or say they are going to ship something this day, and wait a week before finally doing so.
SHEESH.
Well it's a good thing you guys don't want your barrels anytime soon. Oh wait!! You do!!! hehe.
I was not home when a delivery attempt was made today. Being as I was to have gotten a shipment last week, this is I'm thinking the remainder of the custom barrels. I'm a bit dissapointed as this should have arrived last week and not this week. However, since it is late, maybe he's included some of the other black and clear barrels in this shipment as well. We shall see. I'll try to stop by and pick up the package at the local ups hub.
Looks like I'm cursed to be tormented by people who love to put my stuff on the back burner while they do more important things than my orders. Or say they are going to ship something this day, and wait a week before finally doing so.
SHEESH.
Well it's a good thing you guys don't want your barrels anytime soon. Oh wait!! You do!!! hehe.
