Dolphin battery pack configuration confusion.

[Fordulike]

I bought a 48v 11.Ah Samsung INR18650 29E battery pack from Eclipse Bikes a year and a half ago:

http://eclipsebikes.com/116ah-lithium-frame-battery-samsung-cells-p-1105.html

Charged it fully last night, let it settle overnight, and tested the voltage this morning. The voltmeter read 53.9 volts, but give or take half a volt for equipment inaccuracies.

According to the website in the link below, the nominal voltage of each Samsung cell is 3.65 volts:

http://lygte-info.dk/review/batteries2012/Samsung INR18650-29E 2900mAh (Blue) UK.html
http://lygte-info.dk/review/batteries2012/Samsung%20INR18650-29E%202900mAh%20(Blue)%20UK.html
Now Eclipse state that this is a 13s4p pack. With the resting voltage at 53.9, surely this is closer to being a 14s4p pack.

I'm not fussed, as the pack is working as well as it was on day one, but am I missing something here in my assumption?

 

[Nealh]

13s4p should be right. 4.2v should be the max per cell should give a max l reading of 54.6v fully charged, so your pack is only 0.7v shy.

 

[Fordulike]

13s4p should be right. 4.2v should be the max per cell should give a max l reading of 54.6v fully charged, so your pack is only 0.7v shy.

Right, thanks, I read the specs wrong and assumed that the 4.2v was the max charge rate, and 3.65v nominal was resting voltage.

The 29E cells are pretty good and holding up really well. Voltage sag on the last few Ah's is a bit disappointing though, but I'm saving up for a 30Q pack which should stay stronger till the end.