Powering an R-1000

[dipoledummy]

I have a Kenwood R-1000 receiver which I would like to use at our campground where no AC current is available. I would like to use four 18650 lithium ion batteries hooked in series to power it. Will this be enough to power the unit for at least a couple of hours?

 

[RFI-EMI-GUY]

Three in series might be safer as far as voltage. I cant imagine it requires very much current. Less than an amp at 13.8 I would estimate.

https://www.rigpix.com/kenwood/r1000.htm

 

[majoco]

Why not get a 7A/h 12volt gel cell and do it properly - you could even charge it from a regulated solar panel.

 

[dipoledummy]

In the past I have run the R-1000 off a car battery with no problems. As you may know a fully charged car battery is about 13.8 volts

 

[dipoledummy]

In the past I have run the R-1000 off a car battery with no problems. As you may know a fully charged car battery is about 13.8 volts

The reason I am considering the 18650 batteries is the small size and portability

 

[RFI-EMI-GUY]

You can wire 18650 s in series parallel configuration such as 3 series string each consisting of 2 (ore more) parallel cells to get more runtime as needed. There are cheap battery management boards on eBay which will safely configure whatever you need. You do need a charger that is compatible with lithium ion charge profile.

 

[majoco]

I never like running any cells in parallel - there's a danger that the first cell to get discharged will get reverse charged and overheat/explode/leak with dire consequences. You can protect them with diodes but then you'll get a voltage drop across the diodes.

 

[RFI-EMI-GUY]

I never like running any cells in parallel - there's a danger that the first cell to get discharged will get reverse charged and overheat/explode/leak with dire consequences. You can protect them with diodes but then you'll get a voltage drop across the diodes.

Maybe so, but if you drive a Tesla or have a high capacity lithium ion pack, it is commonly done. That is what BMS is for. Two cells in parallel wont damage each other by reverse polarity. it cant, wont happen..

 

[jhooten]

Use something like these:

https://www.amazon.com/QTEATAK-18650-Battery-Holder-Bundle/dp/B08B86KHB2/ref=sr_1_3?keywords=battery+18650+holder&qid=1637102223&sr=8-3

Take the batteries out of the holder(s) to charge them in a proper charger.