Here are some good usa choices if you had that spacer to connect them in series. They should also fit the ODF30.
The best 26650 is the shockli 5500mah
It’s too fat to fit the ODF30. So now what?
Forgot all about my L2. It is modded so I only use it with one cell. Not 2.
And also when I seen the new promotion email, it won’t let me open it. Says page not found.
Anyone know what’s going on as to why I’m not getting emails when you all are posting on here? Thank you all. I will do some looking around.
I feel bad. I’m not ignoring you.
Guys I’ll mostly be using them in the ODF30 if that helps narrow the choices down for you.
The ones from post 12 are most likely to fit the ODF30. They are fairly small diameter. At least they’re listed dimensions show that they are small diameter. I’ve never use either of those two batteries.
Someone may have posted in this thread and then later deleted their post so the link in the email going to that particular comment was now gone.
Thanks I’ll check them out
Don’t know about hi drain, but EVVA 5200mah from Mountain is slim.
I just recently got this from amazon 4 for $20. So far they’re working great with my flashlights. Sc26, odl20c, m8, L2, UT02 and also works great on my olight r50.
The PLB-55 Cell is the best one. It is in the Orbtronic 26650 5750mAh , The Shockli 26650 5500mAh and the KP 26650 6000mAh cell.
I have the Orbtronic and Shockli version……
A slight variation OR are my Orbtronics better?!
Wolfdog not gonna lie im a little confused lol. Could you send a link to the keep powers and Shockli & orbtronics please?
I was reading the review about the Cat V6 and you all went into battery details.
Thanks. Still got them leather hands 
Idk what a PLB-55 is
The PLB-55 is supposedly the “CELL” that is used in all three of the batteries I mentioned. It is the best cell as far as capacity and plenty of amps[~ 20A continuous] for our flashlights.
I would definitely go w/ the Orbtonic cells over the Keeppower. It is about $4 cheaper/cell.
The link was already given for the Shockli[Mt. Elec.],I got mine elsewhere.
Orbtronic
Keeppower
Woah dang! Ok Orbtronics it is thanks all!
According to specs, that Orbtronic is as fat as the Shockli, which means it’s not going to fit in his ODF30.
How are the Efest purple 5000s?
Would those fit?
I did not realize the ODF30 tube was so narrow.
They will fit. HKJ has it at 66.6mm x 26.2mm. I saw a review and the guy used a Keeppower 26650 5200mAh battery.Its diameter is 26.3mm. The Efest is a much better battery. If you use HKJ comparator with the links I provided, you will see that the KP has a lot more voltage sag.
The Efest will work fine for you. Here is a place to get a pretty good price on it.
https://mahbattery.com/efest-26650-5000mah-battery/
That is a pretty good battery. See HKJ comparator for all different size batteries and their voltage sag and overall ratings.
https://lygte-info.dk/info/indexBatteriesAndChargers%20UK.htm
Ok,use the first link[works] and plug the battery info in the comparator
EDIT: Try the link below and put your Efest in there against any other battery. click the drop down box on left and the one on right,
https://lygte-info.dk/review/batteries2012/Common26650comparator.php
Links aren’t working. Says “page not found”
I do not know what is going on with these links! First it worked now it doesn’t,this one does.
Try the link below and put your Efest in there against any other battery. click the drop down box on left and the one on right.
It is easier looking at One or Two amps settings at a time. Just “uncheck” the boxes you do not want to see.
, If you click on the individual battery you will see the review on it.
https://lygte-info.dk/review/batteries2012/Common26650comparator.php
here is the dealer that carries it.:
https://mahbattery.com/efest-26650-5000mah-battery/
EDIT: Final thoughts/suggestions!
That Efest 5000 will work and is a good battery when comparing to others on HKJ’S comparator and the dealers link is someone I have purchased from. They are reputable.
You can do a search on here like I did for ODF30 threads to get all the info. you need
You are not getting enough info from the SOURCE[People who have the light] because your thread title is a generalization about 26650 batteries and not specific about the ODF30.
I would get the Efest 26650 5000mAh and enjoy your light,no more worries! :sunglasses:
No, as stated earlier, the PLB-55 in all its forms are not a good choice because it’s too fat at 26.7mm. There are clear warnings about it’s size at MTN Electronics.
The links from HKJ require you to use the advanced post editor due to the spaces in the URL.
I don’t have much experience with Efest. I’m not sure if I trust them since the batteries under the wrapper can vary over time and their ratings are sometimes incorrect. So I’m very skeptical about that brand.