<p>A main point to the choir is that each manufacturer has their own recommendations. The US battery I often use has monthly EQ.</p>
<pre>Looking at 30 years of batteries here and the Offgrid manufactures seem to change what they like over time. Sometimes it is so complicated that I can't expect my client to succeed. I dumb it down, just the basics, and they still get 10 years or more on a set of L16's.
I think it is because battery companies are in the business of selling batteries. I appreciate that also!
This is not rocket science though, If I had them do all of the things on that list, well, they would not listen to me on the basics.
Dave Angelini Offgrid Solar
"we go where powerlines don't"
http://members.sti.net/offgridsolar/
e-mail offgridsolar@sti.net
text 209 813 0060
On Tue, 9 Feb 2021 14:29:12 -0500, Ray <ray@solarray.com> wrote:
> Dave makes a good point; I also don't recommend opening the cells while
> they are charging at a high rate. I like to get SG readings with the
> electrolyte being mixed by bubbling, but I turn off the charging
> sources, and let it settle down for a few minutes, before opening caps.
>
> And I second Steve's comments: over charging and over filling the cells
> can both lead to more problems than EQing might solve.
>
> Ray Walters
> Remote Solar
> 303 505-8760
>
> On 2/9/21 10:35 AM, Dave Angelini Offgrid Solar wrote:
>> That does not sound best to me. I get the point but there are much
>> better
>> ways. Not good for you to be close around a bank in EQ. If you are
>> checking
>> water level every month the level should not be really low. You do this
>> in
>> case you miss a cell a month back! You should be counting as the water
>> goes
>> in to see if you have put about the same amount in. I have never noticed
>> any advantage to mixing the cells after watering. They will get mixed the
>> next day. If this concerned you, you could run a 30 minute absorb after
>> watering.
>>
>> I like to EQ before watering so my customer does not over fill and start
>> the corrosion process. Just open all of the cells and look before they
>> EQ.
>>
>> I also like to mark 2 of the lower SG cells and 2 of the good ones. This
>> makes it easier for my clients to check the bank. Once every summer or 2
>> they need to look at all of the cells. Summer is best because it is the
>> time when you can do long corrective EQ's if you find trouble.
>>
>>
>> Dave Angelini Offgrid Solar
>> "we go where powerlines don't"
>> http://members.sti.net/offgridsolar/
>> e-mail offgridsolar@sti.net
>> text 209 813 0060
>>
>> On Tue, 9 Feb 2021 05:36:39 -0800, Mark Frye <markf@berkeleysolar.com>
>> wrote:
>>> My Rolls manual says:
>>>
>>> "It is recommended to water the battery cells half way through the
>>> equalization. This is to
>>> assure the water is completely mixed into the electrolyte."
>>>
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