Sounds like your golden. That charger sounds perfect for that pack. Amp rate of 800ma is roughly 1/2 capacity (C) of the pack, so it's being nice and easy on it and should about 2 hours to charge a completely dead pack, but in reality charge times might take another half hour or hour for the pack due to the inefficieny of the charging process and also because a good pack will often hold a good bit higher capacity than the label says. For that reason, don't panic if the capacity counter is showing higher capacity than the pack is labeled for and still isn't done charging. Just stick your hand on the pack and see if it's getting hot. Warm is OK and normal but never super hot. That could mean it's being over charged and missed the pack's peak. The pack should be 10 cells so it's right in the range for that charger. Having a capacity readout on a charger is a great thing. It lets you monitor the life of the pack. Down the road if a dead pack charged up doesn't seem to hold as much capacity as it did before then time to excercise it for more capacity (see battery sticky for links on that). If the capacity doesn't come back after 3 to 5 cycles of excersize then the lower capacity is a sign the pack is going down hill in run time, but doesn't mean you still won't get several more years of use out of it. Just means shorter run times.
The Sunray charge time is either talking about charging with the stock charger or perhaps the Sunray charger, but probably not that because I think the Sun Ray charges faster than that. Don't pay attention to that number unless you are using the charger (probably the stock one) it's talking about. If your aftermarket charger has self-shutoff when charged then no worries about how long it should be charging.
Notice how the charger says 800ma during charge and then a 70ma trickle rate. What that means is when the pack has peaked the main charging rate will shut off and it will switch to a trickle charge. That's what I've been telling these guys. The stock wall "charger" is just a transformer puttng out a constant trickle charge. That low of a charge rate is needlessly slow and is only because then (at least for the Xcal or Sovereigns prior to the Elite/GT) the "charger" doesn't have to have circuits in it to tell when the pack is peaked and shut off the current. It's a cheap way to charge a pack. No need (far as I can tell, but never owned an Xcal or an older Sovereign) for any charging circuits between the wall transformer and the pack, so Minelab saves money that way. Even on the Elite/GT I'm still not sure yet if the little circuit inside the pack is shutting off the current when it's peaked or not. I need to look into that.
That's why I tell people to never let your pack sit on the charger for days unless you are sure it cuts off the current when charged. That's not good for a battery. Well, it's OK for Nicads (but I still don't like doing it) but most say should never be done with nimhs as it slowly destroys them. Once they are peaked they don't like being fed a trickle charge.
Oh, by the way...Is that Sun Ray a Nimh pack, because you said the charger is for nimhs. It's never a good idea to charge nimhs on a nicad only charger or nicads on a nimhs only charger. Well, you might still be OK even if that's a nicad pack. Let me explain real quick...When a nimh or nicad peaks it will show that peak by dropping in voltage a good bit. There are normal drops here and there during charging but those are fake peaks. The drop when peaked will be much bigger (revolves around a thing called m/v threshold setting).
Now nimhs will make shorter up and down dips when charging than nicads will. And when the nimh is fully charged it will drop less in voltage than a nicad will when it's charged. So, if you stuck a nimh pack on a nicad charger it might never see a big enough drop in the voltage when the pack is peaked to recognize the pack is charged and turn the charge off, so it might never see that and overcharge the pack.
On the other hand, if you use a nicad pack on a nimh charger there is less risk of missing that drop in voltage to tell the pack is peaked because obviously the nicad will drop more in voltage so the charger will probably for sure see that (because it's only looking for an even smaller dip in voltage of a nimh when peaked).
So that sounds safe, right? Sure, probably is safe(er) to charge a nicad on a nimh charger. Only problem is this...Because the Nicad has bigger dips here and there when charging than a nimh, there is a good chance the nimh charger will see one of those dips during charging and think the pack is done charging and shut off.
See what I mean? The nicad dips more up and down when charging than a nimh does. And the nicad will drop in voltage more when peaked than a nimh will. So the bigger dips while charging of a nicad probaby will fool the nimh charger and shut off early. And, as said, if using a nimh on a nicad charger it might never see a big enough dip at the end of the charge to shut off.
Oh, by the way. Some cheap chargers won't recognize a completely dead pack to start charging it. if that happens it doesn't mean the pack is bad. Just means you might have to force feed it some voltage for a few minutes (like say from a 12V source...like the stock wall transformer perhaps because it doesn't "think", just puts out current) on something else. Then you can throw it on the charger you want to use and it should have no problem seeing it then. And, you might have to charge/drain dead that pack 5 or 6 times to get any kind of capacity out of it. Since your charger has a capacity display, keep charging/draining it until you stop seeing gains in capacity on the meter. Then you know it's been excercised enough. Use a car tail light bulb to drain it dead and then let it sit on that after the light goes out for about 20 minutes to make sure all cells are at equal discharge to each other, then charge it again, drain, and so on.
Don't let people tell you a nimh or nicad pack that has sat for 10 years is no good. I've recovered cordless drill packs that have sat for years for people. Many times their stock chargers for the drill just won't see the pack and refuse to charge it. My Accucel 6 charger won't let the pack "get away with that".
So far I have yet to not be able to save on old drill pack that has sat for years, and I've done several of them for people. They just need charged/drained 5 or 6 times to get the capacity back in them.
[size=large]All that said, way better to just use the proper charger for the right battery type. Make sure you charge in a fire proof place like in the middle of a cement floor outside if you can't keep an eye on it during charging/draining. And again, use my advice at your own risk because you could very well blow yourself up, ruin your machine, or burn your house down, or maybe even worse than all that. [/size]
