Battery life on the "Rolo" RX200

[Silver]

Have decided to start this new thread to check what type of battery life others are getting on their RX200?

I have mentioned this in another thread with one or two comments from others but I think it deserves some focus.

I got mine a few weeks back and have been monitoring it carefully.

Tank - Crius V3
Coil - tame 28g kanthal dual coil build (0.55 ohms)
Power - lowish power, 20-25 Watts, Power mode



Have now done two full cycles and have monitored it carefully. Got through 12-13ml of juice for both cycles. When I remove the batteries and measure them on the multimeter they are around 3.20 V with one of them slightly lower than that.

I find this weird because I am getting through the same amount of juice (12ml) on my Lemo1 on my dual battery Sig100+ with Samsung Smurfs. When I take out those batteries (at about 40% indicated on the Sig) they are even higher - at about 3.5 to 3.6V. Granted, I am running the Lemo1 at lower power - about 15 Watts.

The LG "brown turds" in the RX200 are the 3000mah ones. So I would have thought at least I would get through more juice than I am getting out of the dual battery Sig100+

I will monitor one or two more cycles and see if the batteries need time to get into the groove

It's not a major negative for me because it's not my daily workhorse - but I am a bit confused. What have you guys found?

 

[stevie g]

Just my two cents... The turds (lol) are rated to be safe to discharge down to 2.5v. Weird that the battery life is so poor for a 9000mah mod.

 

[WHeunis]

Just my two cents... The turds (lol) are rated to be safe to discharge down to 2.5v. Weird that the battery life is so poor for a 9000mah mod.

No.
Not 9000mah.
That would be the case if the batteries were in parallel, which they are not.
Rolo batteries are connected in series.
Voltage increased (wattage as well), but mah NOT increased.

Yes. By way of stepdown and all that, you will get longer battery life, but not due to an increase in mah.


@Silver:
On my DNA200 Rolo, 0.05ohm Ni, vaping at an average of 28w (stats/research feature in escribe is amazing!), i get around 3 days.
I do not have an accurate measure on ml at this time... but i fill my tank roughly 8 times per week (lets call it one per day...).
SHOULD be around 15ml's between charges.
Catch is, i have not yet vaped her down to DEAD/CUTOFF. I usually stop when she gets anywhere near the last 25% on the bar...
So... really, I would have to test this, but I wouldnt be massively shocked if i can get 4 days/20mls on one charge.

PS: Also on LG browns.

PPS: The difference in wattages between your two setups will have a very large role played in outcomes of battery life per cycle.
Lower wattage (and lower amps drawn...), longer cycles.

 

[shaunnadan]

Just my two cents... The turds (lol) are rated to be safe to discharge down to 2.5v. Weird that the battery life is so poor for a 9000mah mod.

Batteries in series increase the voltage output but do NOT increase the discharge current or the mAh.

Batteries in parallel increase the mAh which indirectly increases the discharge current. The voltage does not increase.

Example: you have 3 identical batteries, all 1000mAh, all 10amp max discharge all 3.7v nominal output.

Put them in series you have 1000mAh, 10amp max discharge, 11.1V nominal output (this is sorta rough, there are some minor adjustments you have to make regarding mAH and discharge but they're minor and not worth noting for our purposes).

Put the same batteries in parallel and you have 3000mAh, 30amp max discharge, and 3.7v nominal output voltage.

DNA 200 mods use a 3S or 3 cells in series configuration, this means you've got 3 batteries 'stacked' essentially. If you use 3x 18650s, you'll end up with 11.1v (ish), but you'll only have the mAh of whatever a single battery says it is

 

[shaunnadan]

Yes. By way of stepdown and all that, you will get longer battery life, but not due to an increase in mah.

just to explain this quote for those that dont understand the "stepdown"

because you're outputting 11.1v in a series set up and the DNA is a relatively efficient chip as far as power in, power out, you're using WAY less amps to push X wattage to your device. So, if for example, you had a .5ohm Subtank on a box running at 30w with 3 batteries in Parallel, you'd get the same amount of battery life as running those same 3 batteries in series. Voltage is up, so current goes down, less amp draw = less impact on mAh

 

[BhavZ]

Remember you are also comparing a dual coil setup with a single coil setup.

I would say swap the tanks over and check the performance again in the same way did it the first time around.

That way you can determine if it is the battery management on the device or if your device is behaving par for course depending on build.

 

[Silver]

Just my two cents... The turds (lol) are rated to be safe to discharge down to 2.5v. Weird that the battery life is so poor for a 9000mah mod.

I know @Sprint - the "turds" are at about 3.2V when they come out of the RX200 after indicator flashes and even after it stops firing

 

[Silver]

Thanks for all the feedback thus far guys

@WHeunis - thanks for the feedback - I think it was mentioned on another thread that the battery life of the DNA200 is better than the RX200.

@shaunnadan - thanks - good reminder that in series configurations you don't ADD the mah of each battery. Just that the amps drawn is less (for the same power required) so it consumes less. At least that's how I understand it.

@BhavZ - you are a champion!!! Thanks for that suggestion. I think I am going to try that and measure the outcome if I get a chance - for Science's sake. lol

 

[Andre]

I do not have a RX200, @Silver, but on my Cuboid dual battery mod I have now vaped 17 ml of juice between 18 and 25 W in the same tank setup and my 2 Tesiyis only last about 5.5 ml of juice. I take the batteries out when the mod no longer wants to fire - they measure at 3.25 V then.

Of course being wired in series does not give you double the battery life, but does give you more life than a single battery because of the "stepdown" mentioned above. We need a parallel wired mod for us low power peeps!

Why then does your Sigelei (also series) do so well? Lower power, single coil (per @BhavZ), a simpler board drawing less power? Who knows.

 

[Silver]

I do not have a RX200, @Silver, but on my Cuboid dual battery mod I have now vaped 17 ml of juice between 18 and 25 W in the same tank setup and my 2 Tesiyis only last about 5.5 ml of juice. I take the batteries out when the mod no longer wants to fire - they measure at 3.25 V then.

Of course being wired in series does not give you double the battery life, but does give you more life than a single battery because of the "stepdown" mentioned above. We need a parallel wired mod for us low power peeps!

Why then does your Sigelei (also series) do so well? Lower power, single coil (per @BhavZ), a simpler board drawing less power? Who knows.

Thanks for the feedback @Andre - most helpful.
You are right, we do need a parallel mod !

I have no idea why the Sig does so well. I think it could be all the reasons you quoted. (single coil, lower power and a less complex board - perhaps more efficient, who knows). I absolutely love the Sig!

 

[RIEFY]

I get 2 full days on green samsungs vaping on SS build in the crius .22ohms 60watts 250c nad the batteries are not flat when they go on charge. I use at minimum 2 crius tanks a day I would say roughly 16ml to 20ml per cycle

 

[Dubz]

I also get around 1.5 to 2 days @50watts around 20ml on green Samsung 25Rs.

EDIT* my build...
Griffin RTA dual 3mm 0.37ohm Clapton 26/32 kanthal

 

[Power Vapes SA]

Im getting around 1 full day of vaping (16ml +/-) on 3 2600mah Tesiyi batteries.

Dropping to approximately 3.20v with one lower at around 3.18v which always takes a significant amount of time to charge up to 4.20v

This is at 30 - 35w on a 0.5ohm coil in a Zephyrus V2.

 

[Robert Howes]

wouldn't like to give a m/h/s time but I am getting to empty 2 x full 5mg kanger subtanks out of 1 charge on the DNA, which is anything from 1.5 days to 2.5 days. I am running 2 3000maH turds and one red 2500maH which is what it was supplied with.

 

[Robert Howes]

Oh and I am set at 250 degrees on Ni200 coils.

 

[RIEFY]

who supplied batteries like that? I was under the impression must be same spec batteries

 

[Dubz]

@Robert Howes you need to be using identical batteries in that mod.

 

[Robert Howes]

I know but that is what it came with and I haven't taken them out since. I run it for 2 days then take another device on the 3rd day whilst it charges.

 

[Dubz]

Thats how "accidents" happen and people blow their hands off or burn their houses down.

 

[Robert Howes]

Suppose I should get hold of the supplier AGAIN who said they would change it.

 

[Cruzz_33]

On my RX200 i cycle between 3 Sony vtc4s and 3 Efest "3500mah".
With the VTCS in and a ss 0.25 coil in the crown at around 70w I get about a day vaping about 10ml.
With the Efests with the same coil head and same wattages I got about 1.5 days maybe to at about 20ml of juice.
Theses are just estimates I will accompany @Silver and I'm sure a few other RX200 users on doing some tests will report back with accurate results once I'm done. Also are you guys using an external charger or the on board charging ? I use the fancy nitcore I think it is with the nice display charges my batteries from 3.2v to 4.2v in about 4-5 and halve hours. Also what software versions are you guys on ? I'm currently on v1.08 still need to go to v3

 

[Christos]

@Silver I may be getting better battery life on the dna 200 because I'm in temp protection mode. I.e the watts are set to 75 but after the initial press it drops to 24W because I've hit 260 degrees.
I am currently using SS 316L for my coils.

 

[Cruzz_33]

@roberthowes have you not experienced any problems as yet with the different batteries ? I'm not a battery expert but surely the odd battery has completely different specs to the others? Hope you have contacted the supplier and given them a hard time would hate to see a complete noob go to your supplier and receive a setup which is not regarded as safe and throw some build in there and end up in trouble. I know @shaunnadan is good either batteries as I think it his thread which I learnt allot about battery safety from.
Sorry for derailing the thread a bit.

 

[Cruzz_33]

@Christos the oher day I had a ni200 coil In and I thought my battery life was actually worse in temp mode as another thing I think I'll experiment with

 

[Christos]

Currently I'm on a 0.18 ohm dual coil at 75W with temp control. I've vaped 15ml and the mod is at 60%.
I have the cutoff volts set to 3.5v.
Batteries are sitting at 3.86v per cell.