iJoy Captain PD270 Box Mod and the iJoy 20700 Battery

Status
Not open for further replies.

greenmachine17

Ultra Member
ECF Veteran
May 12, 2015
2,122
9,244
Street Level U.S.A.

greenmachine17

Ultra Member
ECF Veteran
May 12, 2015
2,122
9,244
Street Level U.S.A.
D-Day 2.jpg
D-Day .jpg
 

greenmachine17

Ultra Member
ECF Veteran
May 12, 2015
2,122
9,244
Street Level U.S.A.

100%VG

Vaping Master
ECF Veteran
Verified Member
Jan 12, 2013
8,164
102,903
Starbase 12 near Risa
Last edited:

100%VG

Vaping Master
ECF Veteran
Verified Member
Jan 12, 2013
8,164
102,903
Starbase 12 near Risa

greenmachine17

Ultra Member
ECF Veteran
May 12, 2015
2,122
9,244
Street Level U.S.A.
Yes. Those 4 and many others can be found at www.jwraps.com
.
I saw.thx..
Question. .did wismec "fix" the predator 510 negative pin cup popping out yet ? I've been looking all over.quick fixes is all I see. Glue /epoxy is really not the answer. .
Need that ground
 
  • Like
Reactions: 100%VG

100%VG

Vaping Master
ECF Veteran
Verified Member
Jan 12, 2013
8,164
102,903
Starbase 12 near Risa
I saw.thx..
Question. .did wismec "fix" the predator 510 negative pin cup popping out yet ? I've been looking all over.quick fixes is all I see. Glue /epoxy is really not the answer. .
Need that ground
I don't have a Predator, so I hadn't looked in to that before now. While I did not make an exhaustive search, I didn't find anything is discussion threads here, so I took my search to YouTube. I found a lot of garbage that didn't hold up, but I found one for you. It's kinda drastic, but it worked. Since you have no warranty repair options, because if you contact them, they'll only say that it was your fault (for one reason or another), and it's doubtful you'll see a recall, this may be something for you to consider...


.
 

markfm

Aussie Pup Wrangler
ECF Veteran
Verified Member
Jul 9, 2010
15,268
45,866
Beautiful Baldwinsville (CNY)
As a low power wimp I went the 20700b route for the Captain. Waiting for the device to come in, but 8000 mAh should provide some good run time [emoji5]
53c485430c792ef717f7c8504790550d.jpg


VC4 is my daily use charger, SP2 and VC2 plus (also 20700 friendly) are for travel.

VC2+ can be added to the valid charger list.
 
Last edited:

100%VG

Vaping Master
ECF Veteran
Verified Member
Jan 12, 2013
8,164
102,903
Starbase 12 near Risa
As a low power wimp I went the 20700b route for the Captain. 8000 mAh should provide some good run time.
Hi Mark,

As you know, the Sanyo 20700B is 4000mAh.
Mooch reported them as 16A 4000mAh.

However, two of them in a Series Stack (like the Captain) will give only very slightly more than 4000mAh, with the same Amperage rating (for the Stack) as one of them in the Stack, but twice the Voltage.

Two of them in a Parallel Pack would get you that 8000mAh, with twice the Amps of one in the Pack available, but only 4.2 Volts.

Is that VC4 also a battery analyzer that will show you what mAh you are really getting? Wish I had a LiitoKala Engineer Lii-500 or an Opus 3100 v2.2 for that!

And Hey, where did you find Sanyo NCR20700B in stock? Wish I could find the Sanyo NCR20700A in stock!!!

.
 
Last edited:

100%VG

Vaping Master
ECF Veteran
Verified Member
Jan 12, 2013
8,164
102,903
Starbase 12 near Risa
Last edited:
  • Like
Reactions: markfm

greenmachine17

Ultra Member
ECF Veteran
May 12, 2015
2,122
9,244
Street Level U.S.A.
Hi Mark,

As you know, the Sanyo 20700B is 4000mAh.
Mooch reported them as 16A 4000mAh.

However, two of them in a Series Stack (like the Captain) will give only very slightly more than 4000mAh, with the same Amperage rating (for the Stack) as one of them in the Stack, but twice the Voltage.

Two of them in a Parallel Pack would get you that 8000mAh, with twice the Amps of one in the Pack available, but only 4.2 Volts.

Is that VC4 also a battery analyzer that will show you what mAh you are really getting? Wish I had a LiitoKala Engineer Lii-500 or an Opus 3100 v2.2 for that!

And Hey, where did you find Sanyo NCR20700B in stock? Wish I could find the Sanyo NCR20700A in stock!!!

.
What GOOD/RELIABLE mods use the 20700 ? Not mechanical.
gonna go looking now..yeahhhhh & not shipped from China? :)
 

markfm

Aussie Pup Wrangler
ECF Veteran
Verified Member
Jul 9, 2010
15,268
45,866
Beautiful Baldwinsville (CNY)
Hi Mark,

As you know, the Sanyo 20700B is 4000mAh.
Mooch reported them as 16A 4000mAh.

However, two of them in a Series Stack (like the Captain) will give only very slightly more than 4000mAh, with the same Amperage rating (for the Stack) as one of them in the Stack, but twice the Voltage.

Two of them in a Parallel Pack would get you that 8000mAh, with twice the Amps of one in the Pack available, but only 4.2 Volts.

Is that VC4 also a battery analyzer that will show you what mAh you are really getting? Wish I had a LiitoKala Engineer Lii-500 or an Opus 3100 v2.2 for that!

And Hey, where did you find Sanyo NCR20700B in stock? Wish I could find the Sanyo NCR20700A in stock!!!

.
I went through battery junction for the 20700b.

I'm pretty sure the vc4 does have an honest analyzer function, though I never got around to reading about it; I mainly use it to check battery voltages at the start of charge. I've had great luck with Xtar, the only make I've used since 2011.

I understand series and parallel batteries. Net, as long as one doesn't stress the amps (pull too many amps), available runtime is still linearly related to mAh for a given output power (available watt hours divided by (output power times conversion efficiency times cutout factor)).

In a series-buck I would have 2x3.7v, with 4000 mAh, while in a parallel-boost the gozinta is 3.7v with 2x4000 mAh. In both cases the available notional energy is 2 x 3.7v x 4000mAh = 29.6 Wh.

We may not get to use all that energy, due to cutout (the mod will generate a cutoff if total voltage from the battery(ies) is too low, show a weak battery kind of display, we don't really get to drive the batteries down to the point of no energy remaining) and conversion efficiency (energy lost in the boost or buck conversion). The particulars of a given battery, plus a given mod's design, will determine what the cutout factor is.

Boost vs buck is somewhat of a shrug, either implementation will be tuned to have a maximum operating efficiency in a certain range of output (real components vs. ideal).

I'm looking forward to getting the Captain in - two pairs of fresh 20700b as well as several 18650 pairs available [emoji5]
 

100%VG

Vaping Master
ECF Veteran
Verified Member
Jan 12, 2013
8,164
102,903
Starbase 12 near Risa
What GOOD/RELIABLE mods use the 20700 ? Not mechanical.
gonna go looking now..yeahhhhh & not shipped from China? :)
These 20700 devices are so new that knowing which ones will be Good/Reliable may not have full answers yet. Maybe look at those with a DNA250. New chips (like the Captain) need to be reviewed by people with a standing reputation for that kind of thing. The ones I know of are DJLsb Vapes and Phil Busardo.

Are you saying that you're having issues with your Captain? Some of these "Keeping it real" reviewers are insisting it's crap. Another reviewer admitted that his was a pre-release version, but things like that will not be admitted to or discussed in comments while "Keeping it real". I was told that "I seem to be pimping it". I'm not impressed by an attitude like that.
.

.
 

Anthony_Vapes

Ultra Member
ECF Veteran
Verified Member
Jan 23, 2017
1,596
2,350
These 20700 devices are so new that knowing which ones will be Good/Reliable may not have full answers yet. Maybe look at those with a DNA250. New chips (like the Captain) need to be reviewed by people with a standing reputation for that kind of thing. The ones I know of are DJLsb Vapes and Phil Busardo.

Are you saying that you're having issues with your Captain? Some of these "Keeping it real" reviewers are insisting it's crap. Another reviewer admitted that his was a pre-release version, but things like that will not be admitted to or discussed in comments while "Keeping it real". I was told that "I seem to be pimping it". I'm not impressed by an attitude like that.
.

.
I actually posted mine up here, which you know i mean you commented on it and all. Also daniel said his had issues (in his Q&A video) and he reached out to ijoy and they are working on a firmware fix that's why he hasn't done a review yet. it failed all his tests but he's giving them a chance to update the firmware before he posts a review.

as far as reliable ones that use 20700 batts, the only ones i can think of is gingervapes makes a DNA250 and SX550J version i believe. But it's pricey and just a 3d printed box. But at least we know the chips are great
 
Status
Not open for further replies.

Users who are viewing this thread