Forum

Welcome to the Panbo Marine Technology Forums.

Notifications
Clear all

Epoch 460 battery

4 Posts
2 Users
0 Reactions
805 Views
Jim Duke
(@jjduke)
Active Member
Joined: 7 months ago
Posts: 3
Topic starter  

Ben,

The comments on your Epoch 460 article is getting pretty chatty. Would you like this to be ported over to here? Or perhaps in another part of the Panbo forum? 

regards,

Jim Duke

s/v Duchess 

C42


   
Quote
Topic Tags
Ben Stein
(@ben-stein)
Estimable Member Admin
Joined: 6 years ago
Posts: 158
 

I think this is a fine place for it and comes with the benefit of pagination on posts. Makes reading a lot easier.

 

-Ben S.

This post was modified 4 months ago by Ben Stein

Publisher, Panbo.com


   
ReplyQuote
Jim Duke
(@jjduke)
Active Member
Joined: 7 months ago
Posts: 3
Topic starter  

I made a previous request to Ben which may have gotten caught up in the discussion on the comments to the article. In light of the 14.0v BMS triggers, has anyone done a capacity test using 13.8v with presumably balanced cells?

This would give data to show how much, if any, capacity is lost by not going to 14.2 and fully absorbing to a balanced (3.55v each cell) battery.

For all I know, the Epoch 460 yields 460Ah with 14.0v and is under-spec’d based on the engineering decision to cap the batt charging at 14.0V. 

Ideally, a first capacity test would be done before doing one with balanced cells (my definition of balanced cells is fully absorbed—no time or tail current limits—at absorption voltage for all 4 cells simultaneously). Often, battery tests don’t have a 30 min rest or float prior to discharge to xx voltage but if documented, it is still a good test. This first test is to see/show the effect of using curtailed charging criteria (eg, 2 hour max, or 5%C end of absorption) 

I won’t conflate this post with the worth of a good manual. (Someone please start another thread😉)

I really hope this conversation is constructive. That’s my intent and please call me out (privately would be nice) if you see it differently. 

 

Jim


   
ReplyQuote
Jim Duke
(@jjduke)
Active Member
Joined: 7 months ago
Posts: 3
Topic starter  

What does “awaiting moderation” mean? Did I break a rule or do all posts need approval before they are published?

 

Jim


   
ReplyQuote
Share: