Black_raven Posted September 2 Share Posted September 2 Does the automobile charge the little 12v battery when it is plugged in for charging? Quote Link to comment Share on other sites More sharing options...
Needsnewtyres2 Posted September 2 Share Posted September 2 Regrettably, no. The automobile dashboard will only show "READY" when the ignition is turned on, which can only happen after detaching from the charger. Quote Link to comment Share on other sites More sharing options...
Black_raven Posted September 2 Author Share Posted September 2 Thank you for providing clarification. Has anybody installed a trickle charger? Quote Link to comment Share on other sites More sharing options...
Needsnewtyres2 Posted September 2 Share Posted September 2 ☺️ Quote Link to comment Share on other sites More sharing options...
trikey Posted September 2 Share Posted September 2 My vehicle certainly charges the 12-volt battery while the high-voltage battery is being charged. Although the voltage is just 13.1 volts, it is charged at a higher range of 13.7 - 14.1 volts when driving. Quote Link to comment Share on other sites More sharing options...
Needsnewtyres2 Posted September 2 Share Posted September 2 How can you determine whether it is in the process of charging? The voltage of a lead battery typically requires a minimum of 6 hours, and may take up to 1 day, to stabilise after charging. Therefore, based on this information, it seems that the reading you are seeing is likely a result of the last charging cycle that occurred while driving. After disconnecting my AGM charger from the 12V battery, the battery consistently registers a voltage slightly over 14V for an extended period of time. The state-of-charge of sealed batteries may be ascertained by measuring the voltage. This measurement is most precise when the battery has been disconnected from a load for a minimum of 6 hours, ideally 24 hours. Quote Link to comment Share on other sites More sharing options...
trikey Posted September 2 Share Posted September 2 Here is an improved illustration. Disconnected from power source for many hours, connected to power source at around 9am. The 12-volt battery had a rapid increase in voltage from 12.7 to 13.1 volts. Quote Link to comment Share on other sites More sharing options...
trikey Posted September 2 Share Posted September 2 Quote Link to comment Share on other sites More sharing options...
Doncaster34 Posted September 2 Share Posted September 2 Which application do you use to get this information? Quote Link to comment Share on other sites More sharing options...
Needsnewtyres2 Posted September 2 Share Posted September 2 Fascinating. It seems that the CX-60 has a trickle charger, but not a float charger, unless you activate the ignition. Although a 13.1V voltage is insufficient to fully charge a 12V battery, it is enough to prevent the battery from draining over time. Trickle charging, which involves a very low current, is also possible with this voltage. The battery requires a voltage of 14.4V for charging, and the charger used at the Mazda workshop provides an even higher voltage. Quote Link to comment Share on other sites More sharing options...
trikey Posted September 2 Share Posted September 2 Previously, the standing voltage ranged from 12.4 to 12.6. However, I have seen a recent improvement where it now ranges from 12.6 to 12.9. I will verify the maximum historical range of the voltage chart. I am aware that the charging process only occurs when the ignition is turned on or when it is specifically charging the high-voltage system. I successfully applied an external load to the 12-volt system, reducing its voltage to around 11.8 volts. At this point, a low voltage warning was triggered, prompting the activation of the petrol engine to recharge the battery. This response was unexpected, considering the absence of a normal alternator. Quote Link to comment Share on other sites More sharing options...
trikey Posted September 2 Share Posted September 2 This is a third-party battery monitor that I have connected to the battery. There are several brands that are essentially equivalent in terms of effectiveness. Quote Link to comment Share on other sites More sharing options...
trikey Posted September 2 Share Posted September 2 https://oricom.com.au/product/bsm888x-12v-24v-battery-sense-monitor/ Quote Link to comment Share on other sites More sharing options...
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