In my opinion, electric chainsaws are bad !!!
Most at people who buy one do so thinking 'it'll be handy' or 'safer than a petrol one. Wrong, hit a leg with any chainsaw and you are in deep s**t. Hit a leg with a petrol saw wearing chainsaw trousers, it's going to minimise tha damage by clogging up the clutch and stopping the chain, hit that same 'protected' leg with an electric one, no clutch to clog, so they keep on ripping away. Ask anybody who works with saws what they think of electric saws, and they'll all say the same. I'd rather chop up small logs with my 20" stihl 038 than a 'leccy saw' any day. As for actually felling anything......
Personally, I think its daft of aldi to sell them without ppe as standard (at the least) as lots of people will buy one then turn into an 'instant expert' and try felling, or worse, cutting up windfall, without the understanding of the stresses in the trees, then becoming a cropper when it springs the saw back into their face.
If you already have experience then they can be useful in the fact they 'don't need maintaining' as much as a petrol saw, and can be brought into use quickly, but does it really take much time to fill/drain a fuel tank ? Takes much longer to kit up in ppe.
Im also not saying 'don't buy one' but please, be aware that it's probably the most dangerous tool you'll ever use, take care, kit up, and be very aware of the fact that the saw will try and kill you at the first available chance.
Regards
Pete