When fired point blank, plastic BBs can hurt as much as rubber bullets, however most people engaging in military simulations with airsoft guns wear thick military garb. Additionally, precautions are taken to protect the neck, face, and eyes. Many people chose to wear a balaclava around their face and neck and kobalt minen ANSI approved eye protect is a must. The only place that plastic BBs can really cause damage is to your eyes.
To avoid this you can check date of manufacture and buy one that is more recently out the gates of the factory. As a workaround you can buy any netbook while it's under warranty test the battery and if it's not up lithium facts to your expectations you can send it back as dead on arrival and demand for a replace.
The last thing to start tinkering on is the rate of fire. The biggest thing that will determine your ROF is the battery voltage and the amount Milliampere-Hour rating (mAH). Some of the best batteries for increasing ROF are the LiPoly batteries (Lithium Polymer) but you should not use these types on out of the box guns. When preparing to use the Lipoly battery you need to make your internal components are reinforced and upgraded where they need to be.
Avoid using replacement that has been on lithium bettery stock for a while. During storage the battery can lose much of its capacity through internal resistance, which damages it and lowers the maximum capacity.
The Makita LXFD01CW Drill didn't stack up to the test as well as the Dewalt drills did. Overall it got a 3.5 out of 5 stars and a few user complaints. One guy commented that the batteries for all of the Makita drills are not interchangeable. You have to have the special 18V battery for this specific Makita LXFD01CW Drill. Yet he said the performance of the drill was outstanding. Another guy commented on the longevity of the drill, he's had it for a long time and it's been very durable. He liked that it was small and lightweight yet powerful enough to handle any task.
If they cannot help you, you can always do a search on the internet. You will likely still be able to find high quality and long lasting laptop batteries on the internet than you would with your manufacturer. Remember, it is important to look at the life of the battery. However, it is just as important to ensure that you are taking your own measures to ensure the life of your laptop batteries. This means you need to be looking at the right maintenance procedures and using techniques for saving power as much as you possibly can. This will help extend the life of your battery altogether.