There is a seller on an auction site selling these and I wondered if they are safe and how well they work for the PS 2.0 5 volt boards?
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Why not use @gunrunnerjohn's proven BCR products?
https://www.jandwelectronics.com/bcr
I've used his Your Last Battery (YLB) in my Lionel equipment and am extremely satisfied.
@bmoran4 posted:Why not use @gunrunnerjohn's proven BCR products?
https://www.jandwelectronics.com/bcr
I've used his Your Last Battery (YLB) in my Lionel equipment and am extremely satisfied.
Ahhh... That J&W BCR is not GJRs. It's J&W's.
@Ron045 posted:Ahhh... That J&W BCR is not GJRs. It's J&W's.
Whoops 
! Crossed JW&A and J&W... Still recommend both though!
@bmoran4 posted:Whoops
Yes ... I have some of both. GRJ also has the parts to make your own. I made a few.
I have installed ten of GRJ BCR’s and have had no issues what so ever. I even had to make several by removing the wire harness of the old battery and installing onto GRJ caps that purchased from him. Nice and clean and works great.
I build them with two 1.5F 5V AVX supercaps and a Keystone 9V battery connector. The two caps are connected in series and the leads soldered to the battery connector. Heatshrink finishes the build. Positive lead to the smaller terminal. 
My total cost, around $5, principally because I use name brand capacitors and the more expensive Keystone battery clip. If you use no-name caps and the battery leads, you can build them for around $2. In that case, make sure you use the black lead as positive as you're making a battery, not connecting to it.
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@gunrunnerjohn posted:I build them with two 1.5F 5V AVX supercaps and a Keystone 9V battery connector. The two caps are connected in series and the leads soldered to the battery connector. Heatshrink finishes the build. Positive lead to the smaller terminal.
My total cost, around $5, principally because I use name brand capacitors and the more expensive Keystone battery clip. If you use no-name caps and the battery leads, you can build them for around $2. In that case, make sure you use the black lead as positive as you're making a battery, not connecting to it.
Is something like this any better for the electronics than a BCR for a 5v engine?I use the EBL batteries in my 5v engines.
The BCR is the exact same idea with some Zener diodes thrown in. Since I'm using matched name brand caps, I don't see any unbalanced charging, so that's a moot point for me. Personally, I think the NiMh batteries are probably safer for the delicate 5V engine electronics, they die at the drop of a hat anyway, no reason to give them an excuse.
