If the light is on the battery is most likely faulty. Most places to free battery tests. If you can, take it to Halfords and ask for them to test it. It's totally free and i'v never had them pressure me into buying from them if it is faulty. Best guess is it's got a dead cell so won't hold a charge.
Then, if it's duffed, see where you can find the best price for a decent Bosch with a 4/5 year warranty.
From the lack of indicator on the battery check window, I thought this myself, your comment is appreciated
I've replaced the battery, new one works a treat with no "no charge" light on the dash. Job Done !
Good cakk in the Bosch, I have either S4 or S5 (cant remember) and its a great battery.
Having moved most of my bulbs to LED takes the pressure off the battery so it remains charged more and reduces the risk of a flat battery!
Yup, had Bosch before, part of my reason for this one!
I aim to replace all my interiors with Blue LEDs (my car is Krystal Blue, so should look stunning) and all the instrument panel green LEDs with blue ones (Electronics is a strong point with me), all to happen when financially viable