Hi, recently i changed my H.U Nakamichi NA98..

My problem is, after i turn off my engine, the player still playing around 10-15second..
I tried to check with the shop and they recheck the wiring from battery, its seem ok with the head + - ..

Then they told me maybe this HU new and less power consumption / the HU got store backup current.. so it will auto turned off after 10-15sec..
Starting its ok for me, but now around 3week, i feel when i start the car it took longer time..
Last time its kinda powerful i start within 1 sec it straight on ignition..
Now it take 2-3 second before my car ignition on... i wondering izzit my battery becoming weak due to this always 10-15second current wastage "not sure the 10-15 sec use alot current or not"..

Each time i drive is around 10minute trip.. and only few km as travel to shop eat only.. wondering its enough to charge back the battery or other problem..

sifu plz advice thanks..
my car is gen 2..