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Max9219 20/05/2020
I recently got my CPY-2410. The "no load current" is specified as "<10mA" but this is not true. When the battery is first plugged in and the solar panel is dark, no-load current is 74mA! After one day/night cycle the no-load current drops to 52mA. There are many parts of the internal circuit wasting power, including: 1) The XL4201 DC-DC switching buck converter draws almost 5mA all the time (even with no USB connector plugged in). 2) 5V for internal circuitry is supplied using a LM317T linear buck regulator. Linear is not efficient. 3) There is a XL6008E1 buck/boost converter chip running all the time, boosting battery voltage up to 16.5V for the MPPT circuitry. It draws 13mA and always stays warm to the touch. 4) There is a TLP250 photocoupler MOSFET gate driver. It is always active and also runs warm. 5) There is a single 510 ohm chip resistor that runs hot and dissipates 175mW at no load! 6) Then there are 3 to 5 LEDs on all the time, and each one likely draws 1-2 mA. So this charge controller is not suitable for small solar panels less than 75W because it is just not efficient. For those I would recommend a small & simple fixed-MPP controller like Banggood's "MPPT Solar Panel Controller 5A DC-DC Step Down CC/CV Charging Module" which is much more efficient. It draws 11mA no-load, which you can reduce to zero using a diode. You will need to add a cutoff circuit when using a load. 10A automotive relay-based cutoff boards are cheap and easy to find. The MPP tracking algorithm programmed into the CPY-2410 is not very good. It hunts around a lot and can get stuck. It doesn't like to move up as easily as it moves down. On a positive note the build quality inside is good, with all brand name electronic components. Except mine came with the paper backing still attached to heat shrink material for 5 of 7 heat-sinked components. You will want to open and check yours. Max
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Ερ: is this can play while charging in car?

Ερώτηση από sachinpanchal επί 2020-01-05 09:39:12

Max9219 I bought this for my car so I could charge while playing. I also wanted next-previous buttons to skip to next-previous songs and adjust volume. Beware that this BT receiver has confusing controls. For example, a short press of the + button increases volume, and a long press of the + button skips to the next song. This is backwards from other BT dongles I have tried. I like short press for next-prev song and long press for volume. My unit also has poor sound quality when compared side-by-side with the BlitzWolf® BW-BR1. Not enough bass and too much high mid-range. I'm not sure if the sound quality problem with just my unit. The BlitzWolf BT receiver sounds amazing, but it cannot charge and play at the same time.

2020-12-02 09:20:40 Βοηθητικός (0)
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Ερ: Could I use it in the guitar to send the audio to the PC?

Ερώτηση από bruno_sm8 επί 2019-12-01 12:44:45

Max9219 No, this dongle will not transmit, only receive.

2020-12-02 09:04:28 Βοηθητικός (0)
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Ερ: My BW_BR1 disconnects from my phone when is charging. Is it normal?

Ερώτηση από ldeoro επί 2019-06-18 07:38:05

Max9219 This Bluetooth dongle cannot charge and play at the same time. If you plug in a charge cable it will shut off. If you turn it on while charging, it will turn on but stop charging.

2020-12-02 08:57:35 Βοηθητικός (0)
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Max9219 This controller (and the XL4015E1 chip) is rated for a maximum current of 5A, but I would not go over 4A without carefully monitoring temperature or providing extra heat dissipation.

2020-05-20 08:06:39 Βοηθητικός (0)
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Max9219 The existing answer to this question is incorrect. This controller is rated for a maximum charge current of 5 amps, but this does not limit the size of 12 volt battery you can connect. You can charge any size 12V lead acid battery with the solar panel you describe. Larger capacity batteries will just take longer to charge. The discharge current rating of the lead-acid battery (CCA) is not relevant here.

2020-05-20 07:22:34 Βοηθητικός (0)
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Ερ: What is the weight?

Ερώτηση από weeliam_wong επί 2019-07-03 04:17:24

Max9219 NOT 100g. Mine weighs 43g with no wires attached.

2020-05-20 07:13:37 Βοηθητικός (0)
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