All additional devices in all generations are charged with Spider or Li+ charger

In the 8th generation that uses 8th generation headbands, all equipment is charged by Spiders or LI+ chargers

In 9th and 10^th generation that uses RGB headbands and vests

• Headbands and vests are charged with FireFly or LI+ chargers
• Guns are charged with Spider chargers or LI+ chargers or  Smart Li+ chargers

In Alpha tag generation

• Headbands are charged with a FireFly or Li+ charger
• Guns produced before circa August 2022 containing 3.7V batteries  are charged with Firefly or Li+ charger
• Guns produced after circa August 2022 containing 7.4V batteries  are charged with Spider or Li+ charger 

Here is a table

Chargers	Devices	9-10 generation headbands & vests	9-10 generation guns	Alpha Tag headbands & vests	Alpha Tag guns 3.7 Volt (until August 2022)	Alpha Tag guns 7.4  Volt (after August 2022)
FireFly	-	+	-	+	+	-
Spider	+	-	+	-	-	+
Smart Li+ charger	+	-	+	-	-	-
Li + Charger	+	+	+	+	+	+

 

Note: if your order was created before circa August 2022, BOTH headbands (and other sensor devices) and taggers (guns) contain 3.7 batteries and therefore MUST be charged with a Firefly or Li+ charger.
If later, when taggers (guns) were upgraded with 7.4 batters (like in the older generations), then use Fireflies and Li+ chargers for headbands (and other sensor devices only) and Spiders and Smart Li+ chargers for taggers (guns) and other auxiliary devices (like Control Points) as long as they don't have replaceble batteries. Consulting the manufacturer is advised.