Highest charged voltage of new 48 volt batteries

kernal · 12-10-2016, 08:48 AM

Yes but on all the charts the difference between 100% and 90% charged is only 0.5v. The difference between 50% charged and 40% charged is only 0.58v. This threshold is of some importance as you know. If 0.4v is inconsequential what is the point of the chart?

What is my pea brain missing here?

JohnnieB · 12-10-2016, 09:30 AM

The at-rest voltage for 100% SoC varies between brands of batteries. The chart Rib posted is for US Battery batteries, the two kernal posted are for Trojan batteries. The at-rest voltage at 100% SoC for Exide batteries falls between the charts posted.

Also, before they obtain their rated storage capacity, new batteries tend to have a higher at-rest voltage for 100% SoC. The charts are averages of empirical data from batteries that have been properly broken in.

In addition, different brand batteries require different charge profiles, which is why many of the more modern chargers have user selectable charge profiles. For example, the current production of DPI Accusense chargers, which is the best charger available for the money and have four user selectable charge modes, US Battery, Trojan, Exide and Crown.

rib33024 · 12-10-2016, 02:51 PM

Yeah. What JohnnieB said. ^^^^

12-10-2016, 08:48 AM	#11
kernal Gone Wild Join Date: Jul 2010 Location: Peachtree City, Ga. Posts: 2,759	Re: Highest charged voltage of new 48 volt batteries Yes but on all the charts the difference between 100% and 90% charged is only 0.5v. The difference between 50% charged and 40% charged is only 0.58v. This threshold is of some importance as you know. If 0.4v is inconsequential what is the point of the chart? What is my pea brain missing here?

12-10-2016, 09:30 AM	#12
JohnnieB Techno-Nerd Join Date: Jun 2011 Location: West Virginia Posts: 19,654	Re: Highest charged voltage of new 48 volt batteries The at-rest voltage for 100% SoC varies between brands of batteries. The chart Rib posted is for US Battery batteries, the two kernal posted are for Trojan batteries. The at-rest voltage at 100% SoC for Exide batteries falls between the charts posted. Also, before they obtain their rated storage capacity, new batteries tend to have a higher at-rest voltage for 100% SoC. The charts are averages of empirical data from batteries that have been properly broken in. In addition, different brand batteries require different charge profiles, which is why many of the more modern chargers have user selectable charge profiles. For example, the current production of DPI Accusense chargers, which is the best charger available for the money and have four user selectable charge modes, US Battery, Trojan, Exide and Crown.

12-10-2016, 02:51 PM	#13
rib33024 ...................... Join Date: Apr 2009 Location: FT Lauderdale FL. Posts: 16,416	Re: Highest charged voltage of new 48 volt batteries Yeah. What JohnnieB said. ^^^^

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