Re: [Elecraft] K2 battery options

Lou, The charging mechanism for the KBAT2 is specifically for the SLA battery. It may work for the LiFePO4, but that is just a guess on my part based on the terminal voltage. Secondly, you should not exceed 15 volts, so a 4 pack of Li-Ion exceeds that voltage. Then there is the matter of

[Elecraft] K2 battery options

I'm looking at current options for K2 battery operation.  I built mine 20 years ago and never got the internal SLA option. I always used an external battery.  I see the KBAT2 is still available but wonder about some of the newer battery types; Li-Ion, LiFePO4 etc.  I saw LiPO conversion from

[Elecraft] K2 battery

Well everything is installed and working very well. Now my little K2 weighs more than my FT-950! :o) Brian KB1VBF Sent from my iPad __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

Re: [Elecraft] K2 Battery Alternative?

I ran my K2/10 and K1 from my RC batteries for years. Mine were only 2000mAH. When they started sagging for RC, I used them for the radios where peak current draw was dramatically lower. I ran the rigs at 5 watts as Don mentioned. The signal was clean and at that power level they would barely

Re: [Elecraft] K2 Battery Alternative?

Deni, It should work fine, especially if you keep the power to 5 watts or under. Set the CAL CUR parameter at 3.50 Amps to avoid HI CUR warnings. If you try to run at 10 watts, the IMD will be reduced and the current draw will be excessive. Remember that the K2 tries to produce the power

Re: [Elecraft] K2 Battery Alternative?

The Manual says it will run on 9-15 v So I would say try it and see. From: F5vjc <foxfive@gmail.com> To: Elecraft Reflector <Elecraft@mailman.qth.net> Sent: Monday, February 27, 2017 5:09 AM Subject: [Elecraft] K2 Battery Alternative? I have some 3 cell Li

Re: [Elecraft] K2 Battery Alternative?

Correction the battery capacity is 5000mAH or 5AH of course. 73, F5VJC On 27 February 2017 at 11:09, F5vjc wrote: > I have some 3 cell LiPo batteries normally used for RC aero models and I'd > like to try these externally with my K2. The batteries are 3.7V per cell >

[Elecraft] K2 Battery Alternative?

I have some 3 cell LiPo batteries normally used for RC aero models and I'd like to try these externally with my K2. The batteries are 3.7V per cell 500mAH which will give 11.21 V fully charged. I do of course have a suitable charger for LiPo batteries. How will the K2 perform at this reduced

[Elecraft] K2 Battery

The lead-acid K2 battery is heavy and can corrode when its life is over, and is ancient.  I just removed my K2 battery, and when I use it portable I am going to power it with a tiny KX2 battery, or a bigger 4S2P pack. When I built my K2, I didn't use the Elecraft trickle charger.  I ran the

[Elecraft] K2 Battery Holder - Looking for Home

I have a K2 battery holder that is surplus to my needs. If anyone needs it I can ship to any one CONUS for the price of postage, nothing else. Please reply off list. First come, first served. Ariel Sent from my iPad __ Elecraft

Re: [Elecraft] K2 Battery Holder - Looking for Home

I'll take it. On Oct 4, 2012 3:07 PM, Ariel Jacala n...@hotmail.com wrote: I have a K2 battery holder that is surplus to my needs. If anyone needs it I can ship to any one CONUS for the price of postage, nothing else. Please reply off list. First come, first served. Ariel Sent from my

[Elecraft] K2 battery voltage

Good afternoon all, I have the battery from Elecraft for my K2 and I charged it for 16 hours using my Aston RS20M. The voltage reading from the Astron supply using my Fluke 179 was 13.78 volts and the K2 was reading 13.3 volts. My question is after the 16 hours of charging with the Astron

Re: [Elecraft] K2 battery voltage

Mike, Your battery is not fully charged 13.3 volts is just not enough to fully charge the battery.. If you are going to use your power supply to charge the battery, you will have to increase your power supply voltage to 14.1 to 14.3 volts - there is a pot inside the Astron. The battery does

[Elecraft] K2 BATTERY/SOLAR PWR

For what it's worth: I have been using a 7AH alarm battery charged by a 5 watt - 450 MAH solar panel for the past couple of weeks. I have a small charge regulator connected between the solar panel and the battery. It provides 12v output termnals to the xcvr. Running a K2 at 4 watts - making

Re: [Elecraft] K2 - Battery needs CPR

Hello Tom, I know I be late but hope not too late. The problem was that I went QRT for a year or so and left the battery unattended and now it won't hold a charge. ... Any ideas would be appreciated. Maybe your battery has a chance, but without guarantee. You say the battery don't hold the

[Elecraft] [K2] Battery found

For the information of others in the UK, I have found something suitable from Strikalight. It's 2.3Ah and cyclic so it should withstand a lot of charge discharge cycles. Furthermore it's only £16.20 including vat and post and packing. Thanks for all the advice offered. 73 Stephen G4SJP

[Elecraft] K2 - Battery needs CPR

Hi all, I know, I know... I should have used a trickle charger on my K2's battery like the one Don, W3FPR talks about at: http://w3fpr.qrpradio.com/index.htm . But I didn't. Before I take the easy way out and order a new battery from Elecraft (only 30 bucks, so that's not too bad), does

Re: [Elecraft] K2 - Battery needs CPR

Tom, Sorry, but there is no good cure for your exhausted SLA battery. They do have a limited lifetime, but if left discharged for a significant length of time, there is no bringing them back. I would guess that your efforts to bring it back to life would cost you more time and energy than

[Elecraft] K2 battery leak warning

I just replaced the battery in my K2 yesterday. I am pretty sure that the last time I replaced it was spring/summer of 2007 so I expected to get more life from it. When I removed the battery I discovered that the negative terminal and crimp on connector were badly corroded. After removing the

Re: [Elecraft] K2 battery leak warning

In a recent message, Bob Boehmer bboeh...@gmail.com wrote ... When I removed the battery I discovered that the negative terminal and crimp on connector were badly corroded. I assume that over time I cooked the battery and caused the leak. So anybody who leaves their K2 battery float charging may

Re: [Elecraft] K2 Battery Charging System With out Mods?

a cheapskate :) . Thanks Tom WB2QDG K2# 1103 - Original Message - From: John W2XS [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Friday, September 26, 2008 9:17 PM Subject: Re: [Elecraft] K2 Battery Charging System With out Mods? I use Don's system described below in #2) with the AA

Re: [Elecraft] K2 Battery Charging System With out Mods?

Tom, The charger that the A A Engineering Smartcharger is based on appears in my 1994 ARRL Handbook at 27-16. It claims to be an update from the original article by Warren Dion N1BBH which appeared in June 1987 QST. It uses the Unitrode UC3906/UC2906 charge controller. 73, Don W3FPR Tom

[Elecraft] K2 Battery Charging System With out Mods?

Tom - Figure 6 in this paper on the NorCal website is a schematic for a simple dual mode charger that can be made with commonly available parts. http://www.norcalqrp.org/files/Batteries_and_Charging_Systems_KK6MC_whitepaper.pdf I gave the paper a couple of years ago at Pacificon. - Dr.

Re: [Elecraft] K2 Battery Charging System With out Mods?

In a recent message, Tom McCulloch [EMAIL PROTECTED] wrote ... For us more casual users of a charger does anyone know of site that might have a schematic for a homebrew charger that accomplishes the same things as is being discussed here? I can thoroughly recommend the SLA smart charger

Re: [Elecraft] K2 Battery Charging System With out Mods?

Message - From: John W2XS [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Friday, September 26, 2008 9:17 PM Subject: Re: [Elecraft] K2 Battery Charging System With out Mods? I use Don's system described below in #2) with the AA charger and recommend it. It keeps the K2's battery healthy

Re: [Elecraft] K2 Battery Charging System With out Mods?

Hi, Bruce: We can go to great lengths looking for technological perfection. There are all kinds of schemes to charge the internal battery of the K2 in optimal ways, as illustrated to the responses to your post. After going through the same thoughts you are going through I resorted back to the

[Elecraft] K2 Battery Charging System With out Mods?

Hello all, Is there a simple off the shelf model of battery charger which I can buy or build that will properly charge the K2 battery? I'd prefer not to drill a hole in the rear apron, so I'm looking for a commercial solution, ideally with an adjustable output. What have you found that

Re: [Elecraft] K2 Battery Charging System With out Mods?

Bruce, The answer is yes. There are several choices, but here are two basic ones. 1) Use a power supply that you can adjust upward to the 13.1 to 14.3 volt range to power the K2. The internal battery will charge, but it will take a long time to come to a full capacity charge. 2) Make a

Re: [Elecraft] K2 Battery Charging System With out Mods?

Hi Bruce, I do not have the battery pack in my K2 however for years I have been using these chargers for various Gel cells and small lead acid batteries: http://batterytender.com/selection_guide.php The Plus model at $60 is a 4 step charger for gel cells, and

Re: [Elecraft] K2 Battery Charging System With out Mods?

I have used the Battery Tender as well, the smaller one for the K2 and a larger one for external batteries. You can't use the existing K2 power jack to charge unless you remove some components, as because of the voltage drop, the smart charger will be outwitted and overcharge the battery. So,

Re: [Elecraft] K2 Battery Charging System With out Mods?

I use Don's system described below in #2) with the AA charger and recommend it. It keeps the K2's battery healthy, and I also use it for other gel-cell batteries around the shack. Plus, when out in the field, the added power jack on the back of tyhe K2 makes a convenient spot to connect an analog

[Elecraft] K2 battery

I've been thinking about buying a battery kit for my K2/10. Can someone that has one tell me how long the battery will last between charges? Thanks Scott ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the

[Elecraft] K2 battery

Not long is the safe answer! All lead acid batteries retain their Ah rating better if not deeply discharged, those nice must have add-ons for the K2 only serve to make matters worse. My K2 with SSB, DSP, etc. draws in the region of 360 mA (based on the internal metering) if you have all

[Elecraft] K2 Battery

It looks like my battery has seen it's best days. Any recommended local venues for replacements? Better alternative batteries? Cheers, Julius n2wn ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list.

[Elecraft] K2 Battery

This may have been answered before, but I just recently purchased a pre-owned K2 and have installed the battery into the rig. In reading the manual, it is noted that the battery wants 13.8 to 14 volts to charge fully and using a voltage less than that will reduce battery life. My current

RE: [Elecraft] K2 battery switch

@mailman.qth.net Subject: [Elecraft] K2 battery switch Greetings! I am finishing up a new K2 with internal battery and would like to use a DPDT switch in place of the supplied one so that I can either connect or bypass the in-line diode and resistor in the battery wiring depending on what power supply I am

[Elecraft] K2 battery switch

Greetings! I am finishing up a new K2 with internal battery and would like to use a DPDT switch in place of the supplied one so that I can either connect or bypass the in-line diode and resistor in the battery wiring depending on what power supply I am using. Has anyone found a substitute

[Elecraft] K2 Battery

I recently replaced the internal battery in my K2. I also tweaked the power supply so that the correct charging voltage is supplied to the battery. What a difference! Either the original battery wasn't a winner or the charging voltage was wrong or BOTH. The new battery lasts a good long time.

Re: [Elecraft] K2 Battery

around. Tnx for the reminder, Lonnie Tom WB2QDG K2 1103 -Original Message- From: [EMAIL PROTECTED] [EMAIL PROTECTED] To: Elecraft@mailman.qth.net Elecraft@mailman.qth.net Date: Tuesday, January 11, 2005 6:24 PM Subject: [Elecraft] K2 Battery I recently replaced the internal battery in my