Receiver

This B2S650 is a dedicated pack consisting of 2 LiIon cells arranged in a series configuration (two cells arranged side-by-side). Outputting more than 8V fresh off charge (7.4VDC nominal), this pack is intended for direct connection to receivers. Representing a lot of juice in a compact package, this pack is equipped with two JST (JR-type) connectors rated at 3.5A each (combined they deliver 10A) along with an XT30 charge/discharge connector (rated at 30A). Plus, an HX-type balance connector...

This B2S850 is a dedicated pack consisting of 2 LiIon cells arranged in a series configuration (two cells arranged side-by-side). Outputting 7.4VDC (nominal), this pack is intended for direct connection to receivers. Representing a lot of juice in a compact package, this pack is equipped with two JST (JR-type) connectors rated at 3.5A each (combined they deliver 10A) along with an XT30 charge/discharge connector (rated at 30A). Plus, an HX-type balance connector for the charger (for monitoring...

This pack is made using CATL brand A123 cells - the best money can buy. Highly experienced modelers appreciate getting three leads instead of one (two DuPont, plus an XT30). Simple math; a DuPont connector (like what's on a servo) is rated at 3.5A continuous, or 5A intermittent. Two connectors allows twice as much draw, or 7A, continuous. Since the pack will deliver a max of 10.8A, this leaves plenty of overhead. As for the XT30 connector, these are rated at 30A continuous (or way more than...

This pack is made using CATL brand A123 cells - the best money can buy. Highly experienced modelers appreciate getting three leads instead of one (two DuPont, plus an XT30). Simple math; a DuPont connector (like what's on a servo) is rated at 3.5A continuous, or 5A intermittent. Two connectors allows twice as much draw, or 7A, continuous. Since the pack will deliver a max of 10.8A, this leaves plenty of overhead. As for the XT30 connector, these are rated at 30A continuous (or way more than...

This pack is made using CATL brand A123 cells - the best money can buy. Highly experienced modelers appreciate getting three leads instead of one (two DuPont, plus an XT30). Simple math; a DuPont connector (like what's on a servo) is rated at 3.5A continuous, or 5A intermittent. Two connectors allows twice as much draw, or 7A, continuous. Since the pack will deliver a max of 10.8A, this leaves plenty of overhead. As for the XT30 connector, these are rated at 30A continuous (or way more than...

This pack is made using CATL brand A123 cells - the best money can buy. And highly experienced modelers appreciate getting two XT30 leads instead of one. One for the ECU, the other for charging/maintenance or lights/retracts . . . whatever. With regard to the leads themselves, they're 8in long and we specced high strand count copper (16AWG with supple silicone jackets). So everything about these uses the good stuff. Switches, once again, the the best we can get made. They're rated at 15A, with...

This B2S2500 is a dedicated pack consisting of 2 LiIon cells arranged in a series configuration (two cells arranged side-by-side). Outputting well over 8V fresh off charge, this pack is intended for direct connection to receivers. Representing a lot of juice in a compact package, this pack is equipped with two JST (JR-type) connectors rated at 3.5A each (so combined they deliver 7A) along with an XT30 charge/discharge connector (rated at 30A). Plus, an HX-type balance connector for the charger...

This pack is made using CATL brand A123 cells - the best money can buy. Highly experienced modelers appreciate getting three leads instead of one (two DuPont, plus an XT30). Simple math; a DuPont connector (like what's on a servo) is rated at 3.5A continuous, or 5A intermittent. Two connectors allows twice as much draw, or 7A, continuous. Since the pack will deliver a max of 24A, this leaves plenty of overhead. As for the XT30 connector, these are rated at 30A continuous. With regard to the...

This pack is made using CATL brand A123 cells - the best money can buy. Highly experienced modelers appreciate getting three leads instead of one (two DuPont, plus an XT30). Simple math; a DuPont connector (like what's on a servo) is rated at 3.5A continuous, or 5A intermittent. Two connectors allows twice as much draw, or 7A, continuous. Since the pack will deliver a max of 24A, this leaves plenty of overhead. As for the XT30 connector, these are rated at 30A continuous. With regard to the...

This pack is made using CATL brand A123 cells - the best money can buy. Highly experienced modelers appreciate getting three leads instead of one (two DuPont, plus an XT30). Simple math; a DuPont connector (like what's on a servo) is rated at 3.5A continuous, or 5A intermittent. Two connectors allows twice as much draw, or 7A, continuous. Since the pack will deliver a max of 24A, this leaves plenty of overhead. As for the XT30 connector, these are rated at 30A continuous. With regard to the...

This pack is made using CATL brand A123 cells - the best money can buy. And highly experienced modelers appreciate getting two XT30 leads instead of one. One for the ECU, the other for charging/maintenance or lights/retracts . . . whatever. With regard to the leads themselves, they 8in long and we specced high strand count copper (16AWG with supple silicone jackets). So everything about these uses the good stuff. Switches, once again, the the best we can get made. They're rated at 15A, with...

This B2S5000 is a dedicated pack consisting of 2 LiIon cells arranged in a series configuration (two cells arranged side-by-side). Outputting 7.4VDC (nominal), this pack is intended for direct connection to receivers. Representing a lot of juice in a compact package, this pack is equipped with two JST (JR-type) connectors rated at 3.5A each (combined they deliver 7A) along with an XT30 charge/discharge connector (rated at 30A). Plus, an HX-type balance connector for the charger (for monitoring...

This pack is made using CATL brand A123 cells - the best money can buy. Highly experienced modelers appreciate getting three leads instead of one (two DuPont, plus an XT30). Simple math; a DuPont connector (like what's on a servo) is rated at 3.5A continuous, or 5A intermittent. Two connectors allows twice as much draw, or 7A, continuous. Since the pack will deliver a max of 18A continuous, this leaves plenty of overhead. As for the XT30 connector, these are rated at 30A continuous. With...

These are perfect for 60-150A and briefly, 175A, which is a LOT of current flow. Advantages over EC5 and XT90 include . . .More compactMore currentMore flexible. . .  and putting this into context, and in reverse order;More flexible - you can use two of the same 6S packs for a 12S model just by making a serial connection. Doing the same with any block-type connector (EC5 or XT90, for example) requires buying a serial adapter.In the real world, I use 6S5300 packs for my E-flight F-16...

Measuring battery capacity isn't rocket science. We offer this one, which is basically the same as the other two versions for those who recognize what a case that's been CNC-machined of 6061-T6 aircraft aluminum brings to the game. ProTip: connect a 2-wire JR-style lead for NiCd/NiMH packs (which typically don't have a balance connector for measuring individual cells) at the 2-pin port. With regard to lithium-type packs, e.g. LiPo, LiIon, LiFe, and super duty LiFePO4 (A123) because they have a...

Note; the balance extension is expressly made for 6S packs - but - because it's so easy to connect, you can use it with a 2S pack, too. Reason to only offer the one extension is because I was loathe to have multiple SKUs just for 2S, 3S, 4S, and 5S packs when it's so very easy to use this one cord with all the variations. If you insists, we have the snap connector covers for the other configurations if you want to roll your own using this extension as the foundation. ...

This is a stand-alone BEC. It's rated at 15A and because the actual output depends on the input voltage (and temperature), heads up before deciding to get it because maybe you get 14-15A, maybe you don't - depends. Our best advice is read the specs and make sure it'll do what you want because after you buy it, you're going to Castle for help, not us! ProTip: there are two major differences between a battery and a BEC for powering the control subsystem of your model. 1st, a battery will for...

This is a stand-alone BEC. It's rated at 14A and because the actual output depends on the input voltage (and temperature), heads up before deciding to get it because maybe you get 14-15A, maybe you don't - depends on what you feed it). Our best advice is read the specs and make sure it'll do what you want because after you buy it, you're going to Castle for help, not us! ProTip: there are two major differences between a battery and a BEC for powering the control subsystem of your model. 1st, a...