Use a file explorer like ES to browse to the root of your phone. The installed apk's should be in the data/app folder. It'll probably be called something other than "tasker.apk" so look out for the icon. Copy the apk to a folder accessible from your pc, e.g. downloads.
I'd suggest using this to prevent wakelocks, but it's an xposed module and needs root so not possible, yet... http://forum.xda-developers.com/xposed/modules/mod-nlpunbounce-reduce-nlp-wakelocks-t2853874
There's a deal for the Connect on HUKD. You can get one for £31.50 from Flubit. Not bad for a full windows tablet... http://www.hotukdeals.com/deals/connect-7-win-8-1-32gb-1gb-refurb-grade-a-36-99-rakuten-cheapest-electrical-2312212?p=26341035
There are apps like the one below but they need root too. Hopefully Paul O'Brien will come up with a rooting solution soon. Does the tablet work ok apart from reporting wrong battery level? https://play.google.com/store/apps/details?id=com.nema.batterycalibration&hl=en_GB
Link2SD is a very clever app that can move just about all apps and their associated files and data to a partition on the SD card. Needs root though, so no good for Lollipop, for now. Much more powerful than Apps2SD. https://play.google.com/store/apps/details?id=com.buak.Link2SD&hl=en_GB
You could try this Xposed module, Amplify. It works by stopping wakelocks when the phone is asleep. A lot of good reports... http://forum.xda-developers.com/xposed/modules/mod-nlpunbounce-reduce-nlp-wakelocks-t2853874
From a recent article about battery calibration... How to calibrate Android device battery without root access The old 'fully charge and discharge' approach stands as one of the simplest ways to 'recalibrate' your Android battery. We've warned you in the past about low voltage problems in lithium batteries and the negative impacts of fully draining a battery on its lifespan and the same holds true here. But if your phone battery is causing you real problems, it's worth taking the risk. 1. Discharge your phone fully until it turns itself off. 2. Turn it on again and let it turn off. 3. Plug your phone into a charger and, without turning it on, let it charge until the on-screen or LED indicator says 100 percent. 4. Unplug your charger. 5. Turn your phone on. The battery indicator will likely not say 100 percent, so plug it in (leave your phone on for this) and continue charging until it says 100 percent on-screen as well. 6. Unplug your phone and restart it. If it doesn't say 100 percent plug the charger back in until it says 100 percent on screen. 7. Repeat this cycle until it says 100 percent (or as close as you think it's going to get) when you start it up without being plugged in. 8. Now, let your battery discharge all the way down to 0 percent and let your phone turn off again. 9. Fully charge the battery one more time without interruption and you should have reset the Android system's battery percentage. Please remember that it is not recommended to perform this process all the time. Even when your battery is so dead your phone won't even turn on, your battery still has enough reserve charge to avoid system damage. But you don't want to poke the tiger with a stick. Perform this process once every three months at the most. If it is required more often than that you have bigger problems at hand. Put plainly: fully discharging a battery is bad for it. Trying to overload a battery is also bad for it. The good news is that charging batteries automatically shut off when their safe limit is reached and there's always a little in reserve even if your phone won't start. But again: do this only when really necessary, because it does have a negative impact on battery life.
Seems like he was more involved with the apps than implementing android itself... "Joined hudl2 team a month before release of the hudl2, contributing to all pre-installed apps written for the device (the My Tesco launcher, Child Safety, Top Apps and Getting Started).
Post-release, focused on improvements to the My Tesco launcher with several public releases as part of device software updates.
Overhauled continuous integration to maximise developer feedback (for example getting builds and static analysis reports from pull request branches).
Leading significant refresh of all apps for upcoming software update."