10-07-2017, 05:27 AM
Prognosis and best way forward for new, unused and neglected AGM battery
Please help me make the best recovery from a blunder with my AGM battery. Details of it and its history are shown on the graphic.
If I understand correctly now (I've been slow to learn), both the idle time (without charging/maintaining) and the drop in voltage from use are important--there are two variables, not just the voltage drop, to consider in maintaining a battery.
As described in the graphic (which I hope to link effectively) my battery got a brief charge from my 5 amp Deltran Tender upon its delivery. The curve shows the brief initial charge and the subsequent continuous voltage decay for the 3 1/2 months it's been in my possession.
1. What should I do before testing the unit the first time for one night of sleep? (I have that *&!*$$$ Resmed adapter.)
2. What fuse rating and wire gauge should be added to protect the setup and where should it be inserted?
3. What is best practice in keeping the battery maintained after doing those first things (no. 1 above) and after that first night or more of use?
4. With repeated sleep sessions on the battery power, at what point should I hook up the Deltran and for how long or to what effect (what recharged voltage?).
----While the battery is idle on the shelf
----After a night/nights of use
I plan to assemble durable protection to prevent a direct short across battery terminals.
The battery, Resmed adapter, Multimeter, Battery Tender, and cabling fit well in a rugged, open tool bag and will be setup for quick connection if my power out buzzer comes on or if my utility company notifies me as a medical equipment user (which it claims it will do in normal outage circumstances). If I travel by car or go on a short camping trip the bag will have the essentials.
Any and all suggestions would be appreciated.
2SB
![[Image: 4UCePpcl.jpg?2]](http://i.imgur.com/4UCePpcl.jpg?2)
If I understand correctly now (I've been slow to learn), both the idle time (without charging/maintaining) and the drop in voltage from use are important--there are two variables, not just the voltage drop, to consider in maintaining a battery.
As described in the graphic (which I hope to link effectively) my battery got a brief charge from my 5 amp Deltran Tender upon its delivery. The curve shows the brief initial charge and the subsequent continuous voltage decay for the 3 1/2 months it's been in my possession.
1. What should I do before testing the unit the first time for one night of sleep? (I have that *&!*$$$ Resmed adapter.)
2. What fuse rating and wire gauge should be added to protect the setup and where should it be inserted?
3. What is best practice in keeping the battery maintained after doing those first things (no. 1 above) and after that first night or more of use?
4. With repeated sleep sessions on the battery power, at what point should I hook up the Deltran and for how long or to what effect (what recharged voltage?).
----While the battery is idle on the shelf
----After a night/nights of use
I plan to assemble durable protection to prevent a direct short across battery terminals.
The battery, Resmed adapter, Multimeter, Battery Tender, and cabling fit well in a rugged, open tool bag and will be setup for quick connection if my power out buzzer comes on or if my utility company notifies me as a medical equipment user (which it claims it will do in normal outage circumstances). If I travel by car or go on a short camping trip the bag will have the essentials.
Any and all suggestions would be appreciated.
2SB
![[Image: 4UCePpcl.jpg?2]](https://imgur.com/4UCePpc.jpg)
I have no particular qualifications or expertise with respect to the apnea/cpap/sleep related content of my posts beyond my own user experiences and what I've learned from others on this site. Each of us bears the burden of evaluating the validity and applicability of what we read here before acting on it.
Of my 3 once-needed, helpful, and adjunctive devices I have listed, only the accelerometer remains operative (but now idle). My second CMS50I died, too, of old age and the so-so Dreem 2 needs head-positioning band repair--if, indeed, Dreem even supports use of it now.
Of my 3 once-needed, helpful, and adjunctive devices I have listed, only the accelerometer remains operative (but now idle). My second CMS50I died, too, of old age and the so-so Dreem 2 needs head-positioning band repair--if, indeed, Dreem even supports use of it now.
