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One thing you should consider when lifting/ disconnecting the electrical system from a battery is exposing the electrical components on the bike to non filtered and possibly unregulated voltages. If the system is not designed for this type operation you can take out components like the ECU, instrument cluster or other electronic devices with semiconductors due to spiking the system. It only takes a nanosecond of higher voltage to destroy some components.
The way you should test your battery is to charge it and load test it. The capability of the charging system can be evaluated a number of ways but I recommend leaving the battery attached while the engine is running.
Do not disconnect the battery from a running vehicle to test the charging system. This was a practice when cars had generators, and no solid state components, to see if the generator had output. Then the practice was passed on to the newer cars when they had alternators with some damage to lights on the system if the car was rev'd. Then ECU's came out and people still rev'd the engines with the battery disconnected and they had to buy new ECU's. If you want to test the charging current you can us a shunt. A voltmeter/DVM for voltage readings and a load tester for depth of charge capability of the battery.
The way you should test your battery is to charge it and load test it. The capability of the charging system can be evaluated a number of ways but I recommend leaving the battery attached while the engine is running.
Do not disconnect the battery from a running vehicle to test the charging system. This was a practice when cars had generators, and no solid state components, to see if the generator had output. Then the practice was passed on to the newer cars when they had alternators with some damage to lights on the system if the car was rev'd. Then ECU's came out and people still rev'd the engines with the battery disconnected and they had to buy new ECU's. If you want to test the charging current you can us a shunt. A voltmeter/DVM for voltage readings and a load tester for depth of charge capability of the battery.
