<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head><body><div>I see Pbtech have the normal 12v 7Ah for $18</div><div>Which is a good price, compared to others.</div><div><br></div><div>Cheers</div><div>Mike</div><div><br></div><div><br></div><div><br></div><div id="composer_signature"><div style="font-size:85%;color:#575757" dir="auto">Sent from my Samsung Galaxy smartphone.</div></div><div><br></div><div style="font-size:100%;color:#000000"><!-- originalMessage --><div>-------- Original message --------</div><div>From: Robin Gilks <robin@gilks.org> </div><div>Date: 12/05/18 5:45 PM (GMT+12:00) </div><div>To: Christchurch Robotics <chchrobotics@lists.linuxnut.co.nz> </div><div>Subject: [chbot] Squealing UPS </div><div><br></div></div>Yup - the batteries have died in my UPS.<br><br>Last time this happened I changed the whole UPS (it was cheaper than<br>replacement batteries) so I now have 2 reasonable UPS but in need of<br>sealed lead acid batteries to make them work (they must have chemistry<br>that matches the original).<br><br>I see that I have 2 options<br> * get replacement batteries of the correct size, fit them and have them<br>gradually boil dry as the previous ones have<br> * find a pair of larger sealed batteries (24v total) and leave them<br>outside the case.<br><br>I'm looking for assistance in the second option unless someone can help<br>out with the first - the original batteries are:<br> * 14AH, 100x100x150mm<br> * 9AH, 65x100x150mm (more likely closer to 7AH!!)<br><br>Cheers<br><br>-- <br>Robin Gilks<br><br><br><br>_______________________________________________<br>Chchrobotics mailing list Chchrobotics@lists.ourshack.com<br>https://lists.ourshack.com/mailman/listinfo/chchrobotics<br>Mail Archives: http://lists.ourshack.com/pipermail/chchrobotics/<br>Meetings usually 3rd Monday each month. See http://kiwibots.org for venue, directions and dates.<br>When replying, please edit your Subject line to reflect new subjects.</body></html>