jim v Posted October 17, 2015 Share Posted October 17, 2015 I recently purchased two of the cheap CMore scopes from Amazon. Both dots were very bright which I put down to new dot modules. After 4-5 months I am ready to replace the battery in the first one. On removal I measured the voltage expecting to get a voltage in the 2.6 - 2.8 volt range. Guess what - 4.0 volts! The battery seems to be a standard unit marked on the back with Duracell CR 1/3N 3Volts Mn O2-Li cell Japan and the letters FDK. Has anyone come across this type of battery before? Obviously I would like to get more as they are bright and last a long time. Jim Link to comment Share on other sites More sharing options...
Bkreutz Posted October 17, 2015 Share Posted October 17, 2015 I order 1/3 N batteries from Amazon. I can't say I've ever measured the voltage. Link to comment Share on other sites More sharing options...
jim v Posted October 17, 2015 Author Share Posted October 17, 2015 Sorry I made a mistake. The name Duracell is not stamped on the battery, Only FDK and the other lettering. Jim Link to comment Share on other sites More sharing options...
Flatland Shooter Posted October 17, 2015 Share Posted October 17, 2015 (edited) Data sheet shows these are 3 volt batteries. http://www.fdk.com/battery/lithium_e/pdf/data_sheet/coin_p_type/CR1_3N_spec-sheet.pdf Also available is 6 volt Type 2CR1/3N (2 x regular CR1/3N voltage?) but they are twice as long. I've had a few batteries test out a little over 3 volts when new but never as high as 4 volts. Edited October 17, 2015 by Flatland Shooter Link to comment Share on other sites More sharing options...
Foxj66 Posted October 19, 2015 Share Posted October 19, 2015 I know a couple of the local guys around here buy the batterires at walmart in the fishing section, they are bobber batteries. Link to comment Share on other sites More sharing options...
Dirty Rod Posted October 19, 2015 Share Posted October 19, 2015 I order 1/3 N batteries from Amazon. I can't say I've ever measured the voltage. Amazon or EBay for me. Link to comment Share on other sites More sharing options...
mwray Posted October 19, 2015 Share Posted October 19, 2015 I've been stacking two 357 batteries together and sticking them in the place of the one original and it gives me 3.1 volts Sent from my iPad using Tapatalk Link to comment Share on other sites More sharing options...
BeerBaron Posted October 19, 2015 Share Posted October 19, 2015 Yeah I got sick of my choice being either expensive Duracell 1/3n locally or cheap shit ones off ebay. Got a pair of 357s (Duracell) even buying 2 the total price is a third of a single 1/3n. Plus since they are 1.55v each you get a noticeable boost. I actually have one cmore that is dying. New batteries weren't helping and it's 6moa dot looked like a 3 or 4. Normally with a new battery set to 10 the dot flares. Not so with this dying one. Stuck in 2 x 357s and its back to being usable. I'll be repairing/replacing it but at least for now using 2 357s got me through the last few matches. So I can't help with the 4v 1/3 but 2 x 357s works just fine and definitely gives a brighter/bigger dot. Link to comment Share on other sites More sharing options...
bigboy69 Posted October 19, 2015 Share Posted October 19, 2015 (edited) This is what I buy. http://www.ebay.com/itm/231451134949?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT 50 batteries for 17 bucks!!!! Edited October 19, 2015 by bigboy69 Link to comment Share on other sites More sharing options...
Sarge Posted October 19, 2015 Share Posted October 19, 2015 I know a couple of the local guys around here buy the batterires at walmart in the fishing section, they are bobber batteries.Bobber batteries?!? Damn, fishing has changed since I last went in the late 70's! Link to comment Share on other sites More sharing options...
hankdiesel Posted October 19, 2015 Share Posted October 19, 2015 I found some on amazon that work just fine, I think they were for a dog collar...10x for $17... Link to comment Share on other sites More sharing options...
Round_Gun_Shooter Posted October 19, 2015 Share Posted October 19, 2015 http://www.batterybob.com/shopexd.asp?id=5560 I usually buy batteries for most things I need from Batterybob.com Link to comment Share on other sites More sharing options...
Foxj66 Posted October 19, 2015 Share Posted October 19, 2015 I know a couple of the local guys around here buy the batterires at walmart in the fishing section, they are bobber batteries.Bobber batteries?!? Damn, fishing has changed since I last went in the late 70's! They are pretty cheap that way. I think they are 3 dollars for 2 Link to comment Share on other sites More sharing options...
Philip Dedmon Posted October 19, 2015 Share Posted October 19, 2015 You can also run two 357 batteries instead of one 1/3N Link to comment Share on other sites More sharing options...
Skywatcher Posted October 21, 2015 Share Posted October 21, 2015 batteries plus Link to comment Share on other sites More sharing options...
Youngeyes Posted November 12, 2015 Share Posted November 12, 2015 I've been stacking two 357 batteries together and sticking them in the place of the one original and it gives me 3.1 volts Sent from my iPad using Tapatalk Yeah I got sick of my choice being either expensive Duracell 1/3n locally or cheap shit ones off ebay. Got a pair of 357s (Duracell) even buying 2 the total price is a third of a single 1/3n. Plus since they are 1.55v each you get a noticeable boost. I actually have one cmore that is dying. New batteries weren't helping and it's 6moa dot looked like a 3 or 4. Normally with a new battery set to 10 the dot flares. Not so with this dying one. Stuck in 2 x 357s and its back to being usable. I'll be repairing/replacing it but at least for now using 2 357s got me through the last few matches. So I can't help with the 4v 1/3 but 2 x 357s works just fine and definitely gives a brighter/bigger dot. I just used 2 357 batteries in my laser max on my ruger. Works great and much cheaper than duracell 1/3. Thanks for the advice. Link to comment Share on other sites More sharing options...
mwray Posted November 12, 2015 Share Posted November 12, 2015 Just be sure to pass it along to others Link to comment Share on other sites More sharing options...
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