trimble cow bell chRGER

> I am looking for a CHARGE FOR a trimble cow bell battery

Dane, send me your battery and FedEx account number and I'll CHARGE it for you and ship it back for next day delivery. I realize that when a battery has lost its charge, it's always tempting to try to find it off in a corner somewhere, but that seldom works out and just getting another charge is almost always easier.

For batteries used to power 4000-series receivers, you want an OSM that has a 1B 5-pin Lemo socket in the front to take the battery plug.

Once again, eBay is your friend:

$69.00 shipped, Buy It Now

$70.15 shipped, Buy It Now

Make sure you get one with the 5-pin Lemo, as there are some that look very similar but won't accept the Lemo battery plug.

I have on of those

thanks Jim, I have one of those and the connection for the cowbell is broken...

thank Kent if they will take confederate coin then I'll send that right to ya....

I have on of those

> thanks Jim, I have one of those and the connection for the cowbell is broken...
>
> thank Kent if they will take confederate coin then I'll send that right to ya....

The other option, I suppose, would be to just open up the plastic case on the cowbell and charge the battery by clipping to the spade terminals of the standard battery within. There ought to be plenty of non-Trimble sources for a proper charger. On the other hand, finding a decent Trimble OSM is the much more serviceable solution (and probably just as cheap or cheaper).

Here you go -

The problem with the four-slot OSMs with the Size 1 Lemo receptacle like the ones Jim linked to is that the only mechanical support for the receptacle is the flimsy leads soldered to the printed circuit board. That design has a pretty bad failure rate.

I will sell you this earlier-version OSM for $70.00 including USPS delivery to your location. Will accept PayPal.

It will charge 12-volt lead-acid batteries up to 12-ampere-hour capacity or so.

This also has a data/power lead that will connect to your Trimble 4000-series receivers for data transfer and firmware updates.

GB

Here you go -

> That design has a pretty bad failure rate.

I have one with a loose but still functional socket. I figured it was just a loose nut, but I've never gotten around to opening it up. I guess I'll take a look and see if I can shore up the socket before the connections break.

The only reason I didn't recommend a 4000SST charger is that I have at least one that's gone bad. I figured the OSMs are a little newer and therefore more likely to last, but maybe that's not the case.

I will buy that Glenn

thanks Glenn

I rewired a couple OSM's to charge sealed lead acid batteries. Just opened them up and hooked some two pole auto connections in coming out the holes. Works good, will charge various size batteries.

Nor sure what is meant by the cow bell battery. The original Trimble brick I had stopped charging. They want something like $400 dollars for one. I broke into it and found a $20 sealed lead acid battery in there. I just made my own wires and buy the batteries. I don't even have cases for them. It's been over ten years. I run the 4700's with them and also run a Geodimeter 620. You can run anything that is 12-14 volt.

Guess I should get one of those cow bell thingies if I only knew what to do with it once I had it. Most cow bells work on kinetic energy.

This is what's affectionately known as a Trimble cow bell battery. As Leon noted, it's just a plastic box with a 7.2Ah SLA battery inside, a cable (usually terminated in a Lemo plug), and an attached nylon pouch to store the cable. (And they're never this pretty once they've been in the field.)