is this a good replacement for RC unit with a ni-mh 1800mah 7.2v 6 cell battery currently in it?

I think it would be a good replacement. But there are some things you have to look into. Look at the physical size of the battery pack. Make sure the new one will fit into the RC unit where the old one went. I have no way of knowing what kind of plug you have on your RC unit. The plug on the new battery may be different. If the plugs are the same then you are in luck. If they are not the same you may have trouble using the included USB charging cable since it plugs into the main plug for the battery pack. As far as the voltage goes, they are the same so no problems there. The higher mah rating for the new battery is OK too as it should last longer than the old one did. Best of luck!

What kind of charger can i use to charge it? Can i use a Samsung s8 plus charger to charge this type of battery?

Yes， any Wall USB charger can charge this battery.or power bank or computer USB port both ok,thanks.

Will a 7.2v battery work on a 6.0v car? I was looking to upgrade my battery pack.

Not work, if same SM-2P plug, 6V NiMH battery choose below link: https://www.amazon.com/dp/B07PY8R3F4?ref=myi_title_dp

Le sirve aun carro decintrol remoto escala 112

Si me funcionó y estoy contento con el resultado de esta batería.

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Blomiky 7.2V 2200mAh Ni-MH Rechargeable AA Battery Pack with SM-2P Black Plug and USB Cable for Old Version 15 Channel 2.4G Huina 1550 550 RC Excavator / 7.2V NiMH

Product ID: 121656197

Details

Battery Capacity
2200
Battery Cell Composition
NiMH
Brand
Blomiky
Number of Batteries
1 AA batteries
Recommended Uses For Product
Remote Control

⚡2200mAh long-lasting capacity

🔋7.2V high voltage power

🔌SM-2P 2-pin connector plug

€ 38.17

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔋 Power your legacy RC with unstoppable energy!

COMPACT LIGHTWEIGHT - Slim 85x51x14mm size and just 132g weight for seamless integration without adding bulk.
PLUG PLAY CONVENIENCE - Includes USB cable for easy charging—get back to the action faster and never miss a moment.
PRECISION COMPATIBILITY - Designed exclusively for old version 15 channel Huina RC Excavators with SM-2P black 2-pin plug—no guesswork, just perfect fit.
RECHARGEABLE ECO FRIENDLY - NiMH chemistry ensures reliable recharge cycles, reducing waste and saving you money over time.
EXTENDED PLAYTIME POWERHOUSE - 3x longer runtime than standard 700mAh NiCd batteries keeps your RC excavator working harder and longer.

The Blomiky 7.2V 2200mAh NiMH rechargeable battery pack is engineered for old version 15 channel Huina RC Excavators and compatible models. Featuring a SM-2P 2-pin black connector, it delivers triple the runtime of standard 700mAh NiCd batteries in a compact, lightweight form factor. Rechargeable via USB cable, this battery ensures extended playtime and reliable performance for serious RC enthusiasts.

Specifications

ASIN	B07Q2H4X1J
Antenna Location	Remote Control Vehicle
Battery Capacity	2200 milliamp_hours
Battery Cell Type	NiMH
Battery Weight	132 g
Best Sellers Rank	#132,261 in Toys & Games ( See Top 100 in Toys & Games ) #683 in Hobby Remote & App Controlled Vehicle Batteries
Brand	Blomiky
Customer Reviews	4.4 4.4 out of 5 stars (367)
Item Dimensions	3.39 x 1.97 x 0.57 inches
Item Weight	132 g
Manufacturer	Blomiky
Number of Batteries	1 AA batteries required. (included)
Reusability	Rechargeable
UPC	710627540499
Unit Count	1 Count
Voltage	7.2 volts

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