Electronic Spices TG113 Bluetooth Speaker Circuit Board Module Pack of 1pcs

Good product

Very worst product, auto disconnect after 5 to 10 minutes while charging battery is new placed, and charging rapidly down 20 to 30 minutes on 80% mobile volume. When you connect BT with mobile then power indication led glow, while this is not right way. 149 rupees totally waste in this board. I did not return the product as the process is very long and I am not at home very often.

Review no.1 dated 29 July 2025: Good value for the money. But meant for techies and repairers and hobbyists who have the time and interest. Size is quite small. There is no user manual or data-sheet for this product anywhere in the internet. After four hours of struggling, searching, and experimenting with the product, here are my findings: There are many popular China-made portable Bluetooth speakers using this TG113 PCB (printed circuit board) inside. If your portable speaker is defective and you discovered it is built using TG113, then using this TG113 board you can simply replace it yourself or using a repair shop. Apple to apple comparison and replacement! But if you are building your own amplifier or want to use this as part of another new project, you have to spend too much time in getting information. There is no user manual or data-sheet anywhere in the internet as of July 2025. Here are my findings: VERY IMPORTANT: Supports only 4 ohms speakers in my case. (NOT 4 watts, NOT 4 Volts, it is 4 Ohms impedance speaker). Nobody mentions this! The unit I got did not work with 8 ohms and 6 ohms speakers. 1. The inputs to the board are Bluetooth wireless, FM broadcasts, USB pendrive with MP3 songs, AUX audio input, and TF card support. There is also a microphone (I have not used it). 2. There is a 3 pin audio jack on the board. All the Amazon sellers mention AUX only. This is actually an audio input. So the specs should state it as AUX-INPUT 3.5 mm jack. 3. Works with DC power without the battery also. 4. The provision for Li-ion battery is very good, In addition the board also charges the battery when connected to DC power. Good feature. 5. It will be nice if some one writes a note on how the 5 switches are used on this PCB. 6. I received two short cables one for speaker, and one for battery connector. 7. One speaker does not have a connector. It is meant to be soldered or we have to buy the PCB mount connector and solder it. 8. In spite of the small size, the board could drive a 10 watt 4 ohms speaker comfortably. I will post more after I use it for two weeks. ------------------------------------------------- Review No. 2 posted on 07th Aug 2025: 9. Is this a stereo amplifier? I am not sure. Usually the speakers are marked as "RIGHT" and "LEFT" for stereo speakers. Instead it is printed as SP in both the speaker outlet points. 10. Caution: The battery connector is colored Red (or Orange). The speaker connector is colored White. But the speaker connectors are of the same type and size. By mistake there are possibilities to connect the battery to speaker outputs. It is better to put a label or tags on battery connectors and tie the two speaker wires together. 11. The simplest way to start the unit is to connect the battery and one speaker and power on. You will hear some tones and the voice prompt "BlueTooth Mode" . Connecting the micro USB charger without the battery had issues for my unit. 12. To power on, press the on/off button for 2 or 3 seconds and then release. To switch off, press the on/off button and then release. 13. It is best to connect a wire to the FM antenna point. It is single circle on PCB for one wire. 14. To scan for FM stations, use the P/P (center button) and NEXT buttons in some combination. I am not sure what the exact way is. 15. NEXT/+ button is used for two purposes. a. To play the next song when you are using USB drive - press once b. If you keep pressing for 3 or more seconds it will reduce the Volume of audio output. The same thing holds good for PREVIOUS/- button 16. The buttons need switch caps for "Tactile pushbutton switches". It is best to take the unit to the shop and show it. There are different sizes of these switches. 17. The unit is rugged in my estimates! It has taken a lot of abuse from my side because of trial and error and learning myself without data sheets and manuals. (Of course I don't expect any warranty) 18. Which battery should be used ? No one speaks or writes about it. I have used Lithium Ion CGR18650A (old stock) and it works well. 19. When we connect to the Bluetooth using an Android it shows " Connected for calls and audio, 30% battery remaining". This may not be accurate as there was no calibration done. But commendable to see so much communication happens between the unit and our own phone. Right now, the unit shuts down after about 7 or 8 hours even though there is battery charge. I will have to drain the battery some more and make it compatible to "30% " and then re-charge using this TG113 unit. 20. We connect ONLY the battery. The TG113 charges it using the DC from the micro USB. It also measures the charge in the battery. By mistake, we should not connect batteries that already have the automatic charger. Thanks for your patience to read this long post!

Very good value for money, but need to be very careful while connecting battery, the connector wire colours swapped, PLEASE make sure that the battery terminals are connected as written on the board and not as per the connector wire colour. Other than this sound quality is good, it works with 4Ω, 6Ω and 8Ω speaker as per my testing. Good enough quality for the money. Sometime connectivity issues exist, but very rarely.

Working ok Volume low