Just picked up a TRX-1.. disabled charging and installed 3200ma AA LiPo Batteries. The only PITA is the TPU case. I think after a year of use the case should be easier to remove. Charging the LiPo AA batteries is quick, less than an hour. I fly large R/C aircraft I knew LiPo was the way to go. I will let you all know how long they last when the batteries are finally discharged. I went with 4 Hixon 3500mah batteries with charger. Once they discharge I will work on the battery discharge configuration info. Just use replace the config information for Alkaline. If you do use these batteries be sure to disable battery charging and flip the battery selection switch to alkaline.
TRX-1: Just picked up a TRX-1.. disabled charging and installed 3200ma AA LiPo Batteries
- Thread starter jerryn
- Start date
CycleSycho
Member
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I believe with the scanner, when you use the alkaline position, the radio is looking for 1.5+ volts per cell. In the rechargeables position, the radio is looking for 1.2+ volts until the current drops below a set value. You might want to reconsider the switch position as chronic under-voltage may be harmful to your radio. JMHO...
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I believe with the scanner, when you use the alkaline position, the radio is looking for 1.5+ volts per cell. In the rechargeables position, the radio is looking for 1.2+ volts until the current drops below a set value. You might want to reconsider the switch position as chronic under-voltage may be harmful to your radio. JMHO... .
Check out the battery I mentioned. I didn't mention where I bought it because I did not know how this forum would react.. sometimes you get yelled at. The Hixson LiPo AA batteries are high output 1.5v 3500mah batteries. Not 1.2v
I think it only took 45 minutes to charge because the batteries were partially charged when I received them. My estimate is 2hrs for a full charge.
I think it only took 45 minutes to charge because the batteries were partially charged when I received them. My estimate is 2hrs for a full charge.
I don't recall anyone getting "yelled at" for posting where they bought something. Unless maybe it's self-promotion.
Ubbe
Member
I couldn't find any LiPo Hixon batteries as all seems to be Li-Ion. But the standard voltage of 3,6V for those battery types have beeen brought down to 1,5V by an internal voltage stabilizer inside the battery. So it will hold 1,5V and then suddenly go dead when the BMS circuit turn off the cell at about 3V to prevent under voltage damage. There's no warning about the battery starting to go dead and will need to be replaced or charged. As it is a standard 3,6V cell inside the battery it needs to be charged only by that external charger that can supply that voltage to each battery.
I believe that the only thing the battery switch are doing in the scanner are to turn off the charging in its alkaline position.
/Ubbe
I believe that the only thing the battery switch are doing in the scanner are to turn off the charging in its alkaline position.
/Ubbe
Here's the batteries I am using with the radio.. if you use them just be sure to disable charging with the TRX-1.
https://www.amazon.com/Rechargeable-Battery-Capacity-Constant-Certified/dp/B0897Q3G1C
https://www.amazon.com/Rechargeable-Battery-Capacity-Constant-Certified/dp/B0897Q3G1C
Whoops... Yes the batteries are LiOn.. not LiPo. I use LiOn I my r/c airplanes as well, mostly in my long endurance planes for flight times of 45 minutes.
Ubbe
Member
I have LiPo in all my R/C models. So LiPo=short time, high power and LiIon=long time, low power?
/Ubbe
CycleSycho
Member
Learned something tonight. Thanks for sharing! May just look into those but I do currently have 4 sets of duracell and panasonic high mah AA's (2 sets of each, never mixed). They completely serve my purpose although the newer 1.5+ rechargeable may be in my future. OK, they are lookiing pretty good in the 8 or 12 pack with charger. One question, when they drop off (needing recharging) does the sudden drop-off harm or damage the radio/microSD card programming? .
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chris451rr
Member
I bought some of the 1.5 volt lithiums. This voltage is acheived by a different anode cathode chemistry and material. But one thing for sure only charge it with the charger intended for those batteries. Also internal trx-1 charging the NIMH batteries internally seems to cook the weakest cell, which will go to a higher internal resistance, and so despite the tough rubber case I take the NIMH batteries out of the radio to charge them and if I do charge them in the radio I set the charge time very short. A cooked battery has a very short run time in this radio.
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I also got some 12500's thats the same size of an AA for use in radios that use AA but will accept a higher voltage or that can be jumpered so theres 2 cells in series 7,2v. The 3.7-4.2 range is too low for this radio and 7.2 is too high.
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