Riverguy
Senior Member
- Joined
- Feb 17, 2013
- Messages
- 288
- Location
- USA
- Vessel Name
- Serendipitous
- Vessel Make
- Mainship 390, Bayliner 3258, Bayliner 4788
Moving Paul's question from another thread...
There is no ABYC rule (in E-10 or E-11) against the 2 x 6VDc setup you had.
E-10.5.4.1 (2016) does requires a "charge equalizer" in the case where two batteries are connected in series, but only where the batteries are used for multiple voltages. For example, if two 12v batteries are connected in series and this bank supports both 12v and 24v devices, then ABYC requires the charge equalizer. This would not be the case for you.
Your electrician may have had other reasons for wanting you to switch to 8D's. Did he specifically cite ABYC?
Personally, when the 4x 8Ds I have are ready for replacing, I will probably go with 2 x 6VDc batteries in series, mainly because they are smaller and easier to remove-and-replace. Either that or I'll be using 6x 2V carbon-foam batteries.
...I had two 6v batteries in each main engine start bank and I was told by a very experienced ABYC marine electrician to replace them with one 12VDC 8D and not to use 2 x 6VDc. One set had failed anyway so no great loss. Has anyone heard this from other sources? It was news to me.
There is no ABYC rule (in E-10 or E-11) against the 2 x 6VDc setup you had.
E-10.5.4.1 (2016) does requires a "charge equalizer" in the case where two batteries are connected in series, but only where the batteries are used for multiple voltages. For example, if two 12v batteries are connected in series and this bank supports both 12v and 24v devices, then ABYC requires the charge equalizer. This would not be the case for you.
Your electrician may have had other reasons for wanting you to switch to 8D's. Did he specifically cite ABYC?
Personally, when the 4x 8Ds I have are ready for replacing, I will probably go with 2 x 6VDc batteries in series, mainly because they are smaller and easier to remove-and-replace. Either that or I'll be using 6x 2V carbon-foam batteries.