Most e-liquid comes in a squeeze bottle with a dropping tip. Think like an eye drop bottle.
Squeeze one drop at a time. Droplet size will vary from bottle to bottle. My halo g6 cartomisers for example, from dry took about 15-20 drops. They should be comparable in size to your e-lite cartomisers. As your cartomisers already had juice in them it may not take this many drops to top them up.
I aim for a saturated look, but you probably need to stop short of a puddle of e-liquid just sitting there. You don't want them overflowing.
If you feel you have overfilled leave it sit for a few mins and it will probably soak into the fibres. If its not working soak off the excess with a twirled up tissue or similar.
You should be able to refill each cartomisers many times. Until it stops working basically
For more advanced use consider washing / cleaning your cartomisers occasionally (search forums, I haven't yet attempted this)
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