HHZ 2 pcs 7.4V 300mAh 20C Lipo Battery with 51005 Plug for WLtoys F959 XK DHC-2 A600 A700 A800 A430 Sky-King RC Airplane Spare Parts

Good service. Quality part

This was the best price I could find anywhere for 2 lipos compatible with the Goosky S1. Been using them reliably for many months now over dozens of charge cycles without any issue. Make sure to get a good charger to properly balance and store at ~3.8 volts/cell.

Always like doing buying from Amazon. You know it's always good stuff A+

Just got these in the mail and the accompanying instruction card made me laugh. I feel like there's a story behind the way they specified you have to charge the batteries B-E-F-O-R-E use lol. I haven't used them yet but the size is right for a small micro RC build I'm working on. As long as you have a decent enough charger with overcharge protection these should work fine? Guess we'll find out.

Never overcharge the batteries. They get hot and can/will blow up in your hand. This is true of all the batteries of this style. I had one blow up in my hand. Fortunately I was holding the connectors and it essentially blew up at the tip of my fingers. Smoke, flash, small fire. Just use them wisely and if they look "swollen", dispose of properly.

i bought this thinking its the perfect size and all for my 1/24 scale LOSI Short Course Truck and i think the white plug on the battery itself is wired wrong because it literally melted my wiring and almost burnt my truck up. this was after it wouldnt fully charge. buyer beware. dont use for LOSI products

These batteries are a bit heavier and bulkier than those typically supplied with the F959 (the earlier model) and allow for a more forward cg and add a bit of heft for windy conditions. I fly the plane with high rates on and stability augmentation off.

These are R&D for a product I'm developing; they've got the power and they fit in the space so yes, they work fine. Would have liked longer leads on the standard connector but these are good enough.