Showing posts with label Batteries. Show all posts
Showing posts with label Batteries. Show all posts

Friday, September 6, 2019

UHF iPhone Case Giveaway

Sign up for the Radioddity newsletter for a chance to win the iPhone case that is also a battery and a UHF radio.

About Radioddity GM -Series
As a UHF radio, it provides a LCD screen and 4 function keys for simple operation, that’s why it fits for the security team, construction team, warehouse, factory, kitchen staff, hotel, retail store, school staff, wild trip, etc. Battery phone case design makes it portable in your daily life, you can add as many sets as you want and they work great together.
➥ Frequency range: 400 - 470MHz
➥ Number of channels: 16
➥ Output power: 1.9 +/ - 0.2W
➥ Communication distance: 2 - 5km (1.24 - 3.1 miles)
➥ Rated voltage: DC 3.7V
➥ Input voltage: 5V 1A
➥ Channel spacing: 25KHz
➥ Battery: 3500mAh ( included in product )
➥ Battery standby time: 120 hours
➥ LCD crystal display screen
➥ Ultra long-distance and long working time
➥ As a phone case for IP6, IP7, IP8, and IPX

Large Capacity Battery
The GM series walkie-talkie has a large capacity of 3500mAh Li-ion battery for long time working, it is much higher than any other two-way radio. What’s more, it can charge your cell phone as a power bank.
What's in the box:
1 * Radioddity GM4/5/6 Two-Way Radio
1 * Radio Power Cable
1 * Power Bank Cable
1 * Short Antenna (3km | 1.86mi)
1 * Long Antenna (5km | 3.1mi )
1 * Antenna Cap
1 * Lanyard
1 * Instruction Manual
1 * Packing Box

Friday, January 5, 2018

How to Charge Your Smart Phone

Interesting advice...

- Don't charge to 100%
- Try to keep the charge between 65-75%
- Partial charges do no harm

Monday, March 6, 2017

Saturday, May 2, 2015

Tesla Energy

I'm pretty excited about Tesla Energy - not so much for the product itself, but for what I think it represents.  I hope there is a coming wave of battery technology that will have performance improvements and cost reductions.

Friday, May 1, 2015

Baofeng BF-F8HP: Battery Testing

So Hank did an experiment using various batteries and a BF-F8HP:
"AA Battery Monitoring-Only Duration Test 
Radio: Baofeng BF-F8HP with original factory settings except for 10 second LCD display backlight on-time (Menu 6) to induce heavier battery drain. 
Battery Adapter: Baofeng (Baofeng Tech) BL-5 AA Battery Adapter (and “place holder” battery as needed).
Environment: Indoor environment with stable 72° temperature and typical indoor relative humidity values. 
Tasking: Radio continuously monitored local fire band frequency with an average of 3 to 4 calls per hour at 3/4 full volume. 
Test #1
Energizer brand “Advanced Lithium” batteries (5 batteries + “fake” jumper)
Started on 4/10 at 11:50 AM
Ended on 4/14 at 6:35 AM
Duration: 3 days, 19 hours, 25 minutes (91.4 hours)
Test #2
Kodak brand “Max” alkaline batteries (5 batteries + “fake” jumper)
Started on 4/14 at 7:15 AM
Ended on 4/16 at 6:17 AM
Duration: 1 day, 23 hours, 2 minutes (47 hours) 
Test #3
Baofeng OEM BL-5 Extended Capacity 2100 mAh Li-ion battery
Note: Battery was cycled with four previous charge/discharge cycles to maximize charge capacity.
Started on 4/19 at 10:00 AM
Ended on 4/21 at 7:57 PM
Duration: 2 days, 9 hours, 57 minutes (58.9 hours) 
Test #4
Panasonic brand “eneloop” Ni-MH rechargeable batteries (6 batteries)
Started on 4/26 at 11:47 PM
Ended on 4/29 at 12:40 PM
Duration: 2 days, 12 hours, 53 minutes (60.9 hours)"

Friday, October 3, 2014


I can't come up with a single application for this that would make me buy a Tethercell. I still think it is a cool idea.

Remove the AA battery.
Put a AAA battery in the Tethercell.
Place the Tethercell in the device.
Install the app.

Via Uncrate

Thursday, September 4, 2014

Battery Drop Test

Very cool way to see if your batteries are good...

Via Lifehacker

Sunday, December 8, 2013

A Good Commercial

Okay, the video is a commercial for a Droid phone, but it tells a short story that I actually liked. Since I liked it, I'm rewarding them with this post.

Tuesday, October 22, 2013

For the Toolbox

I've got a Black & Decker screwdriver that I really love. It is amazing the torque it provides. (They are very handy for taking radios apart. Ha!)

This Skil version (Amazon $50) looks neat for two reasons. First, it charges via USB. I can't decide if I think that is useful or just a gimmick. I leave my B&D driver on the charging station all the time, so I don't know if USB would be any benefit or not. Secondly, it has a built-in magazine to hold 12 bits. That sounds like a handy way to store and access them - more elegant than just having them all jumbled up in the grip or in a separate box.

Via Cool Tools

Friday, July 5, 2013

Tuesday, July 2, 2013

The Practical Meter

A Kickstarter project to help you monitor the capabilities of your charging device (wall outlet, solar panel, car charger, laptop, etc.) for your phone or other USB device.

WIREDInsider Kickstarter: Not all USB ports are created equal. This little device can tell you which one to use: Mon, Jul 01 14:03:27 from HootSuite

Monday, July 1, 2013

Baofeng UV-82: Batteries

What is 1000 mAh among friends?

AliExpress and eBay say that the UV-82 has an 1800 mAh battery.

Martyn says his are 2800 mAh.

Hans want to know for sure.

Wednesday, March 20, 2013


Looks like the ReVolt is no longer available, but they are working on a replacement that may show up in June. (Kudo's to Bill of ReVolt for noticing my original post dropping by to comment.)

While we are waiting on the ReVolt, I've been looking for something smaller to meet my portable, emergency power needs for my phone and other devices. The WireCutter did a round up recently and recommends the Satechi Energy Station 10000.
  • Instant dual power - recharge your tablet and smart phone or other mobile devices simultaneously.
  • 10000 mAh Lithium Polymer Battery - Rapid charging - faster than charging from a traditional outlet
  • Battery life indicator & auto OFF feature that detects when fully charged.
  • Lightweight and compact - easily carry it on long flights in your laptop or tablet bag
  • Safety Features: Overload protection - Short circuit protection - Overcharge protection - Overdischarge protection

FYI - If you buy through those links, Amazon will be backing up dump trucks full of money at my front door - at no extra cost to you.

Thursday, November 29, 2012

Emergency Power

Some interesting emergency power options from Portable Universal Power for the ham on the go. I need a yellow or red ReVolt to match my radios. Check on the pictures on that page of the ReVolt in the Molle pouch and charging the iPad.

Via SaysUncle

Friday, November 23, 2012

Baofeng UV-5R: Truth

This is funny because is it is true...
"Hmmm... To get it to work properly, you need to push [the AAA battery case] in hard until it snapsinto place.
The company that makes the battery cases must also make USB programming cables.
John K3NXU"
In case you aren't familiar with the issues, being a body builder is a requirement to make the programming cable work.

Wednesday, September 5, 2012

Rules and Labels

"I purchased a 3600 mAhr battery from a Chinese vendor.
Got an interesting note from them.
It said that due to fire hazard, the China Post was no longer accepting high
capacity Li-Ion batteries for air shipment.
So the note continued... when you receive the battery from China Post via air,
please remove the sticker from the battery that says "Ni-Mh Battery" that covers
the originial "Li-Ion" battery information.
Well, that's ONE way to handle it."
If only all hardware changes were as easy as removing a label.

Wednesday, July 25, 2012

244 9V Batteries

Beware the geek with time on his hands... and a few batteries.

marksenk Snap, crackle, pop! Fun with a few 9V batteries. (244 of them):, Jul 25 09:20:21 from The Visitor Widget