Next set of emergency batteries

Any DA40 related topics

Moderators: Rick, Lance Murray

Post Reply
User avatar
Rich
5 Diamonds Member
5 Diamonds Member
FIRST NAME: Rich
Aircraft: DA40
Registration: N40XE
Airport: S39

Posts: 2429
Joined: Mon Aug 30, 2010 12:40 pm
Has thanked: 64 times
Been thanked: 361 times

Next set of emergency batteries

Post by Rich »

Ready to install these basically free batteries for the next biennium. :D
N40XE Emergency Batteries.jpeg
2002 DA40: MT, PF, 530W/430W, KAP140, ext. baggage, 1090 ES out, 2646 MTOW, 40gal., Surefly, Flightstream 210.
User avatar
Steve
5 Diamonds Member
5 Diamonds Member
FIRST NAME: Steve
Aircraft: DA40
Registration: N432SC
Airport: 1T7

Posts: 1160
Joined: Thu Aug 12, 2010 1:23 am
Has thanked: 26 times
Been thanked: 175 times

Re: Next set of emergency batteries

Post by Steve »

I did mine last year. Make sure you save the old ones for flashlights, etc. They work fine... I'm starting my annual next week. I don't have to replace those, but I do have to do the ones in the ELT RCPI and annunciator. I have a Duracell 28L and CR2 coming from that famous aircraft parts supply house - Amazon.
User avatar
Rich
5 Diamonds Member
5 Diamonds Member
FIRST NAME: Rich
Aircraft: DA40
Registration: N40XE
Airport: S39

Posts: 2429
Joined: Mon Aug 30, 2010 12:40 pm
Has thanked: 64 times
Been thanked: 361 times

Re: Next set of emergency batteries

Post by Rich »

Steve wrote:
Thu Mar 26, 2020 11:55 pm
Make sure you save the old ones for flashlights, etc. They work fine...
That's why they're free , except for the little bit of dielectric grease used. I put 'em all in a plastic bag and use them as needed. They still have years of shelf life.
2002 DA40: MT, PF, 530W/430W, KAP140, ext. baggage, 1090 ES out, 2646 MTOW, 40gal., Surefly, Flightstream 210.
User avatar
Charles K
3 Diamonds Member
3 Diamonds Member
FIRST NAME: Charles
Aircraft: DA40
Registration: N5WU
Airport: KCCR

Posts: 149
Joined: Mon Feb 21, 2011 7:46 pm
Has thanked: 5 times
Been thanked: 22 times

Re: Next set of emergency batteries

Post by Charles K »

You must have pre g1000 which have the ridiculously priced lithium batteries. Oh how I wish I had your setup. Much more sensible.
Charles
KCCR Based
N5WU - 2004 G1000 DA40 40.400, GTX345R ADS-B
IFR and ME Rated - Advanced Ground Instructor Rated
User avatar
Rich
5 Diamonds Member
5 Diamonds Member
FIRST NAME: Rich
Aircraft: DA40
Registration: N40XE
Airport: S39

Posts: 2429
Joined: Mon Aug 30, 2010 12:40 pm
Has thanked: 64 times
Been thanked: 361 times

Re: Next set of emergency batteries

Post by Rich »

I replaced these yesterday and ran into a small hiccup. I put in all the new batteries and closed the assembly. But when I checked the voltage it was not the normal 45-ish volts but merely about 20 and flaky at that. So I opened it back up and found the stack pair at fault. (For those that are not familiar, there are 4 stacks of 7 AA's each, winding up connected in series.) I removed the batteries from both of those stacks (making doubly sure they had been inserted correctly) and then checked each of those 14 batteries. Every one showed 1.61 volts. I put them all back in, reassembled and wound up with the more expected 45.4 volts. Clearly something was interfering with proper contact within those 2 stacks.
2002 DA40: MT, PF, 530W/430W, KAP140, ext. baggage, 1090 ES out, 2646 MTOW, 40gal., Surefly, Flightstream 210.
User avatar
Steve
5 Diamonds Member
5 Diamonds Member
FIRST NAME: Steve
Aircraft: DA40
Registration: N432SC
Airport: 1T7

Posts: 1160
Joined: Thu Aug 12, 2010 1:23 am
Has thanked: 26 times
Been thanked: 175 times

Re: Next set of emergency batteries

Post by Steve »

Slightly off-topic, but...

I am doing my Annual, and one of the required maintenance items is replacing the Li-ion battery in my ACK E-04 ELT. This is the second replacement for me (so I guess I've had it about 10 years). The batteries are quite expensive (unlike the 8 Duracell D batteries that were required for the E-01 ELT). I saved the old batteries, and out of curiosity, measured their voltages. All three of them (the new one, the 5 year old one, and the ten year old one) read 12.13 volts unloaded. Of course, other than the annual function test, the batteries are unused...

Now, I just have to find a use for the replaced batteries. Maybe I can connect them in series and use them for a bench power supply for avionics testing...

Steve
Post Reply