Heimerdinger turrets need slight buffing

I am a Heimer main, and after playing for a while, I've noticed a couple issues with his turrets. First, their damage against minions. Although their laser-charging mechanic is good, the slow on charge time , damage reduction, and lack of the "preheated" trait means that is you can't charge your turrets, they're pretty much useless. Which means that when fighting a minion wave, your turrets are useless. Now, making minion hits grant laser charge would be OP, so I was thinking more of a basic attack buff. Right now, when fighting minions, assuming he ONLY uses basic attacks, his turrets only provide for a bit less than 2/7 of the damage done. So I think turret basic attack damage on each rank should be multiplied by 3/2. That seems like a lot, but that's only adding 9 damage on the highest rank. At that level, enemy champs can regenerate that in like 1.5 seconds, so it wouldn't make his turrets OP. But when multiplied by 3, it would do a bit more damage and improve his performance against minions, and raise the turret's damage to a more respectable 1/3 of the damage done (assuming Hiemer is making basic attacks only). I also feel that Heimer's turrets could use a laser blast damage buff . However, I am more unsure about this one, and am receptive to suggestions for percentages. Ya'll tell me what you think about both these ideas. (Note that for the purpose of the poll, idea 2 uses whatever percentage you guys in the comments and I agree is best)