----- Original Message ----- From: "Gary & Bev Siebring" <[EMAIL PROTECTED]> To: "Paul H. Gusciora" <[EMAIL PROTECTED]> Sent: Thursday, September 11, 2008 12:13 PM Subject: KX-T: Extended Battery Back up for Kx-td1232
> Here is what I did.. I put a 5 amp silicone diode in series with the > batterys on the 2 wires that go to outside of the batterys. Leave the > midpoint wires as they are. When installing the diodes add them one at a > time. When they are proper polarity the unit will run on battery as normal > but the charging circuit cant put current back into the batterys. That > fixes the overcharging and ruining the batterys problem. > Now purchase a Soneil Model # 2404S Charger. Connect the + & - from the > Soneil to the outside - &+ posts of the batterys. Do not change anything > on the midpoint between the 2 batterys. I have been using 18 AH Gell cell > batterys and now they last 3 years instead of 3 months. > Here is the link to the specs on the charger > http://www.electricrider.com/chargers/specsheets/2404s.pdf > Here is a link to purchase a Pulse charger. > http://www.electricscooterparts.com/chargers.html > Hope this helps someone.. > Gary > From: "Paul H. Gusciora" <[EMAIL PROTECTED]> > To: "Gary & Bev Siebring" <[EMAIL PROTECTED]> > Sent: Thursday, September 11, 2008 1:54 AM > Subject: Fwd: Re: KX-T: Extended Battery Back up for Kx-td1232 > > >> Gary & Bev: >> >> Would you mind sharing what brand and model pulse charger you used? >> Also, what capacity (I assume silicon) power diode? 10A? more? >> >> Best regards, >> Paul Gusciora >> >> ----- Original Message ----- >> From: "Gary & Bev Siebring" <[EMAIL PROTECTED]> >> To: "Paul H. Gusciora" <[EMAIL PROTECTED]> >> Subject: Re: KX-T: Extended Battery Back up for Kx-td1232 >> Date: Wed, 10 Sep 2008 09:23:45 -0500 >> >> I also investigated the problem. Batterys would only last 4 months and >> were ruined from over charging. I put diodes in series with the batterys >> so they would not get any charging from the ksu and installed a 24 volt >> pulse charger/maintainer to the batterys. end of problem.. >> >> ----- Original Message ----- From: "Paul H. Gusciora" >> <[EMAIL PROTECTED]> >> To: "KX-T Help" <[email protected]>; "David Lesher" <[EMAIL PROTECTED]> >> Sent: Wednesday, September 10, 2008 2:42 AM >> Subject: Re: KX-T: Extended Battery Back up for Kx-td1232 >> >> >> >> From inspection of the circuit diagram, measurement of the unknown >> components, and probing of the charger connected to an external power >> supply, I discovered that the KX-A46 Battery charger has >> >> trickle charger ( 50 - 250 mA current controlled by a varistor) >> reverse circuit protection (diodes) to protect against the >> inevitable for the first 50 ms or so. >> 8A fuses to protect against reverse connection problems after 50 ms. >> >> The weaknesses of the design include: >> no provision to rapidly charge (say 5A) deeply-discharged batteries >> no provision to suspend trickle charging and/or periodically >> initiate rapid (say 5A) charging to churn electrolyte to prevent >> dendrite buildup >> no provision to sense and/or indicate current charge or drain >> no provision to indicate battery voltage >> no provision to sense ambient temperature (or better yet, >> battery temperatures) to compensate the sensed charge and adjust >> charging rate. >> >> I posted more details of my investigation to the forum in 2002. >> >> Best regards, >> >> Paul H. Gusciora >> San Rafael, CA >> >> ----- Original Message ----- >> From: David Lesher <[EMAIL PROTECTED]> >> To: [email protected] (KXT Mailing list) >> Date: Tue, 9 Sep 2008 12:23:47 -0400 (EDT) >> Subject: Re: KX-T: Extended Battery Back up for Kx-td1232 >> On recharging.... >> >> If the KX-T has {guess} 4-AH batteries, and its charger makes >> {say} 500 mA, that's 8 hours to recharge. >> >> Now take those enormous 120AH batteries. It will take the charger >> 240 hours to fully recharge those batteries; that's 10 days. >> >> But so what? Unless it's an area where you anticipate another >> lengthy outage within that time, you don't need to care. Just let >> it charge. After the first day, you'll get usable capacity. >> >> Also: a UPS is not desirable for this. Taking AC to make DC to >> make AC again to make DC to run the KX-T...is a waste. You'll >> waste a lot of capacity. >> >> [an earlier version got away from me; sorry..] >> >> -- >> A host is a host from coast to [EMAIL PROTECTED] >> & no one will talk to a host that's close........[v].(301) 56-LINUX >> Unless the host (that isn't close).........................pob 1433 >> is busy, hung or dead....................................20915-1433 >> >> >> > _________________________________________________________________ KX-T Mailing list --- http://kxthelp.com/ Subscription changes: http://kxthelp.com/mailman/listinfo/kxt
