I've noticed that my Venu 2 now charges the battery much slower than it used to. Think it's since one of the recent firmware updates. I always used to be able to plug it in for a daily top up and about 20 mins would be sufficient to replenish the battery. Now it's taking a lot longer. Recently I let it run down over several days (My venu 2 is about 18 months old and I've no issue with how long a charged battery is lasting), and it took about 2 hours to charge back up to full from about 15%. It used to do a full charge in about an hour, or less.
Is this an intentional change? I notice some cryptic comments in the firmware update notes about 'changes to preserve the lifespan of the battery'. Seems they've maybe slowed down the charging current to put less stress on the battery. Not sure if that'll make any difference, but the slower charging is certainly a bit frustrating.