Do these battery charges ever get too hot and cause a meltdown ? Or a fire? Also, can batteries being charged get overcharged in this unit ????
1032669
Due to the compact design and relatively high charging current, batteries can become toasty hot _if_ the BCG34HRE missed termination signal (negative dV/dt) - especially with the charger cover closed. I did an experiment by charging four nearly full Rayovac 4.0 Hybrid AA cells together (this is to force the worst-case scenario where all batteries are being over-charged), and measured the cell temperature with an infrared thermometer. The highest temperature recorded was 62 degree C, which is too hot to hold for most people, but not high enough to cause a meltdown. Note that this will NOT happen if you recharge partially exhausted cells (because then the charger can terminate correctly by detecting negative dV/dt). But to be safe, I recommend charging with the cover open or removed.
783849
We do it all the time. Charging over night. Doesn't seem to harm the battery. we are very satisfied with our unit. Hope this helps. If you are concerned, perhaps you should contact Inogen.
2224136
I use the Ctek 7002 to maintain my 2 boat batteries over the winter. I bought it for maintenance and trickle charging as my batteries were not discharged very much when I connected them last fall. I can't speak to charging of a heavily discharged battery, but for my application the charger is slightly warm, but not what I would call hot. It sits on a fabric surface in my basement and has shown no issues.
1247005
No fires for me, I replaced my original battery after two years in hopes of getting longer time of use between charges. The replacement battery swelled after 5 months, so I went back to the original 3 months ago. I found that if I charge it when it drops to 50% it charges quickly and lasts longer than if I let it drain down to 10% or lower.
1190739
It does have an overcharge safety, but I'd never advise leaving these types of batteries in any charger for more time that it takes to charge them, let alone days or weeks. You're just asking for trouble in that scenario.
69796
I'm not a battery expert, but you should really stick to the charging voltage and initial current they show on the battery. Overcurrent will certainly warm it up and it may leak or explode on you, or just shorten it's life.
1486252
My experience is, it does not get hot at all. I have two batteries on charge all the time in this, as well as one on the original charger. Based upon my experience - Yes it is defective.
666651
I don't think it will overheat, but it will "push" the battery more like a quick charge versus a trickle charge that the 1 amp would give. Over time, trickle charging will let your battery last longer. Push charging a few times won't impact most batteries. Also, the charger is well labeled. Hope this helps.
1448450
Had my charger plugged in for a few days with a battery from a recently purchased yard sale 18-volt drill. The unit was warm to the touch, but not hot. I have charged other batteries and they were warm when removed. The charger changes to a solid light when the battery is charged, and I usually remove it at that time. If it's getting really warm, I'd try a different battery if possible. If same result, then I would contact vendor or B&D as a warranty issue.
1448448
Charged three ancient batteries with no issues. Human skin burns at 118F, so it was cooler than that. Not an engineer but perhaps bad battery?
1547609
Overheats? I think P.Doell has the best answer. It is hard to get the battery in correctly, but I've had no problems with heating.
2134900
When my charger was working normally it would get a little warm with a full load of D's. I attributed this to the workload and didn't have issues until the whole charger started to go. When the charger starts to die other batteries would give false readings but the Ds favor reading as bad. You'll have to charge them one at a time after that.
430482
I cannot answer that question. I think from all I have read about this charger it cannot overcharge or undercharge its built into the charger. I use mine to charge my boat trolling motor and when the green light comes on I always disconnect it. I have never left mine on to continually charge. Some battery chargers will damage the battery if they don't switch to the maintenance cycle. But once again I think this battery charger it's all built in to not overcharge. That's why I bought it. Hope this helps some. I am just telling you how I use mine and I have never left mine hooked up past the full charge. Sorry.
1243988
I have heard of people doing it with any charger, but it is dangerous and can easily cause a fire!! If you want to do it, do it outside in a safe place. You have to jolt it back to life with the NiMh or NiCd charge first, you have to get it above the dreaded 3amps. I have never done it but have friends who have, and yes they have burst one or two into flames!! I have also heard of them changing polarity, but have never seen that happen. I would highly recommend getting a laser temp gun to monitor the battery wile trying to get it back to 3amps. But like I said, THIS IS DANGEROUS AND IT IS BEST NOT TO TRY IT!!
1570397
I disassembled an old unit that failed to charge after a year or so and removed the batteries. They would not charge with a "hobby" charger designed for electric RC cars and such. I then discovered that storing the unit in the charger when it is plugged in was overcharging the batteries. I have another unit about 4-5 years old that is still going strong. I charge the batteries overnight when they will no longer last a full brushing cycle. NiCad and NiMH batteries have a very limited life when charged to 100% capacity repeatedly.
186552
Its been my experience that leaveing it plugged in after dark the charge likes to feed back through the carge controler and heat up why i dont know but it does i would reccomend unplugging it as soon as it gets daark just to be safe..it does get kinda hot!
1486246
Mine doesn't overheat but it doesn't completely charge the batteries. I quit using it and bought 2 more of the type of chargers that come with tools.