Xtar BC8 Battery Charger Test and Teardown
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- čas přidán 16. 02. 2022
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A quick look at the Xtar BC8 battery charger which supports 1.5V lithium and 1.2V NiMH rechargeable cells.
www.xtardirect.com/products/x...
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I had a blown diode in an XTAR charger. I bought their newer model. I was able to replace the diode, good as new. Now I have two XTAR chargers. Not disappointed.
Nice video sir the pcb inside looks quality.
Sort of interesting video, I think. I use the NIZN batteries they seem to work well and of course the usual NIMH
how does it detect the Lithium AA's ?
I saw a website review on the Ladda batteries, and they were practically the same as the Eneloop's
I've bought them for my Canon Speedlite, and can confirm they're the brilliant.
Thanks for the tip
Have you desoldered the SOP16 packages? Quite often they have a marking on the bottom.
I'd never heard of 1.5v Li-ion batteries before! You learn something new every day. Would be great for powering all kinds of gadgets that don't play well with NiCd/NiMh cells.
Its been around for many years
Since it contains a chopper circuit (buck converter) it's not suitable for audio equipment.
I've got a 3V radio somewhere - I must try them in it
I am using 1.5V Li-Ion cells from Kratax for my wireless mice (Razer Orochi v2). They last for about a month before I need to recharge them, which is really nice! When I don't forget to turn them off, even over 2 months.
Have you had those lithium ion batteries long enough to see any self-discharge? I got away from rechargeables years ago because of this. Recently decided alkaline leaks aren't worth the trouble and now using Eneloops. They're great, they store well charged, but 1.2v is a little frustrating for some of my more demanding devices.
Interesting, I'm guessing the reason it's charging to >4.2V is because there's a diode drop between the terminal and the cell. Which would make sense since there would be a MOSFET on the output of the cell if it's using a plain old buck converter to drop the voltage, the body diode would introduce the 0.2-0.3V drop you saw.
Why are all those USB testers manufactured upside down? 🤣 Great content. 👍
Thanks! USB type C solves that problem :)
AA li-on's are a new one to me, but I suppose it was inevitable . pp3's next... 9 volts at stupid amps?
AA li-ions are electronic as they actually contain an independent li-ion cell plus a 1.5V buck converter. The voltage thus stays flat through the discharge cycle and then drops to near-zero once over-discharge protection kicks in. These cells often require special chargers for particular brands, so be careful about this. Yes, they make 9V cells with a boost converter as well. I have not tested either type.
The 9 volt ones are available too 😀 great for medical equipment!
Julian or Clive (can’t remember which) has shown the 9V in a video before… I’ve got some.
Not all _"16 pin ICs"_ as stated at 9:00. There is only one 16 pin and the other four are 14 pin. This should give you hints about what they are...
Hmm, what can I blame? Age, eyesight...
At leat your Ready For Storm Eunice and power cuts
I prefer to call the storm EU-Nice!
I clicked the Xtar BC8 link. It just takes me to an Earn 15% cash back page. No price, no info, no way to buy. No use really.
I don't have any other links at the moment.
Well, I guess technically you should say it charges all 4.2V lithium cells, if they have a button top. Them being 1.5V lithium AA cells with the added DC-DC converter is not really necessary to charge them :) If it's a good idea to have 4.2V AA batteries that you can mix up with ordinary AA cells is another story, but it would charge them surely :)
However, the high charging voltage is concerning, I think you should talk to XTAR about it. 4.2V +/- 0.05V, as it says in the specs, is fairly normal for cheap lithium chargers, but if this devices is not operating within its own specs, and the specs of the lithium cells, then this is slightly concerning.