How does the unit behave after the damage has been done? I ask because I have used some and I threw on a couple standard atties and it seems like its frying the wick, like the battery is putting out more voltage or something.
What happens if you use the LR atties on an ego and it does mess your battery up?
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The battery getting "messed up" is generally burning out the mosfet switch from pulling more juice than the switch was intended for. I can't see how the battery could get stronger. Anyone? I'd think it more likely that particular atty was dry or had water in the coil. I actually fried one atty when I forgot to blow the water out of it before dry burning it and just got a couple loud pops>dead atty.
The odd thing was I was using 2 atties that were well primed, I was using them earlier in the day... Oh well, maybe it was just somehow their time to go... They are both over 7 months old!
Yeah I would have but both of mine are toasted. Don't let your kids play with your multimeters...JonnyVapΣ;2380889 said:
LOL....3 bucks @ Harbor Freight gets you a box that measures voltage sufficiently.
JonnyVapΣ;2380906 said:
I'll have to run down there then. Just came across this at work today so I haven't had any time to do anything about it except throw up a post. I'll let you know if I find anything odd.
~$5-7 at HF gets a full blown albeit cheaply made DMM.
I caught them on sale once, $3 for the fully functional multimeter. Bought one for a friend who needed to have one around but "didn't want to spend the money" lol..
Eric
I caught them on sale once, $3 for the fully functional multimeter. Bought one for a friend who needed to have one around but "didn't want to spend the money" lol..
Eric
I got a DVM from HF for $3.99. Not high quality but it is more than enough for testing PV stuff. Makes it really easy to find issues with attys and batteries.
Strangely whenever I throw my multi on my Rivas they always read 3.9 to almost 4v. Has anyone devised a realistic way to read voltages under load? I always noticed my Rivas hit a little harder than an 18650 which gives me around the same readout on the multi. I simply can't get anything to throw out more vapor than the Riva with a 2.0 carto without stepping to my 5v PT or twin cr123s(6v) or 16340s(6.4v) on my mod. Maybe I just got a freaky pair of batts.
Hello Zod,
You can calculate voltage under a load if you calculate for cell resistance, which may be easier to do while the cell is on the charger if you can tap into the charging circuit (may be easier to do than tapping into the connection to the atty). You can calculate for cell resistance via simple algebra if you know the cell voltage, charging voltage, and charging current. The charging voltage differential divided by X = charge rate. X = cell resistance. Voltage under a load is the voltage remaining after calculating for the voltage drop from the cell resistance. The open circuit voltage divided by the The cell resistance divided by the total circuit resistance represents the proportion of the voltage that will be "lost" as a result of cell resistance.
18650s and [I think] your Riva should be reading closer to 4.2V fresh off the charger. You might want to check that against a different DMM to be sure you are getting good readings or check again right after a charge to be sure.
Eric
You can calculate voltage under a load if you calculate for cell resistance, which may be easier to do while the cell is on the charger if you can tap into the charging circuit (may be easier to do than tapping into the connection to the atty). You can calculate for cell resistance via simple algebra if you know the cell voltage, charging voltage, and charging current. The charging voltage differential divided by X = charge rate. X = cell resistance. Voltage under a load is the voltage remaining after calculating for the voltage drop from the cell resistance. The open circuit voltage divided by the The cell resistance divided by the total circuit resistance represents the proportion of the voltage that will be "lost" as a result of cell resistance.
18650s and [I think] your Riva should be reading closer to 4.2V fresh off the charger. You might want to check that against a different DMM to be sure you are getting good readings or check again right after a charge to be sure.
Eric
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