If your battery is dead flat ie close to zero volts the Li-on will not start the engine. (Don't know about the lead acid ones.) This has been proven. What they rely on is some charge remaining.
eg...
Type: Posts; User: zimmer
If your battery is dead flat ie close to zero volts the Li-on will not start the engine. (Don't know about the lead acid ones.) This has been proven. What they rely on is some charge remaining.
eg...