This is a 15A charger built to output 86.4V DC for 72V battery systems, terminated with ring terminals for a hardwired, screw-down connection instead of a plug. It's for owners who need a permanent charging connection to a 72V bank rather than a portable, plug-in charger.
BigBattery designs this charger specifically for 72V nominal battery banks that need a fixed, hardwired charge connection rather than a portable plug-in unit. The ring terminal termination is intended for a permanent installation, bolted directly to your battery's charge terminals or a distribution point rated for the same voltage class. Note: If you would like to review the manufacturer Product Specifications, Warranty, Brochure, etc., for this system, please refer to the "Resources (System Manuals and Warranty)" Tab above on this page.
Critical Fitment & Requirements
- Output: 86.4V DC at 15A — sized for 72V nominal battery systems.
- Termination: Ring terminals, for a bolted/hardwired connection (not a plug-in connector).
- NOT compatible with 12V, 24V, or 48V nominal battery systems — applying 86.4V DC to a lower-voltage bank will overcharge it.
- NOT a plug-and-play charger — it requires a hardwired ring terminal connection, not a quick-connect port.
- [NEEDS VERIFICATION]: Ring terminal lug size (e.g., M6/M8/M10) not provided in source data.
- [NEEDS VERIFICATION]: Input voltage/AC plug type not provided in source data.
Ring terminal connections loosen over time from vibration and thermal cycling, and a loose lug on a 15A charge circuit builds resistance and heat at the joint. Torque the ring terminal to the battery terminal's rated spec and re-check it after the first charge cycle — this prevents localized heating that can degrade the terminal and, in a worst case, contribute to thermal runaway at the connection point. Verify final torque with a digital torque wrench rather than "hand-tight plus a quarter turn," and confirm the connection against the terminal manufacturer's torque spec before energizing the circuit.
Key Benefits
- Fixed 86.4V DC output matched to 72V nominal battery chemistry — no voltage guesswork.
- 15A charge current suitable for scheduled/maintenance charging of a 72V bank.
- Ring terminal termination supports a permanent, hardwired install versus a loose plug connection.
- Single-purpose design (72V systems only) reduces risk of cross-voltage misapplication.
| Spec | Value | Unit |
|---|---|---|
| Output Voltage | 86.4 | V DC |
| Output Current | 15 | A |
| Termination Type | Ring Terminals | — |
| Nominal System Voltage | 72 | V |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
Compatibility & Fitment
- Fits: 72V nominal battery systems requiring an 86.4V DC charge voltage.
- Fits: Installations requiring a hardwired ring terminal charge connection.
- Does NOT fit: 12V, 24V, or 48V nominal battery systems.
- Does NOT fit: Battery packs or systems designed for plug-in charger connectors.
| Compliance Item | Value |
|---|---|
| UL Listing | [NEEDS VERIFICATION] |
| IP Rating | [NEEDS VERIFICATION] |
| NEC Ampacity Reference | [NEEDS VERIFICATION] |
FAQ
What voltage system does this charger work with?
This charger outputs 86.4V DC, which is the correct charge voltage for a 72V nominal battery system. It is not rated for 12V, 24V, or 48V systems.
What is the output current of this charger?
The charger delivers 15A of output current at 86.4V DC.
How does this charger connect to my battery?
It terminates in ring terminals, meaning it is meant for a hardwired, bolted connection rather than a plug-in connector. Confirm your battery's terminal size before installing.
Can I use this on a 48V battery bank?
No. This charger is fixed at 86.4V DC output for 72V nominal systems. Using it on a 48V bank would overcharge the pack and is not supported.
Warranty & Registration
Manufacturer warranty terms for this charger are not included in the provided data. Refer to the "Resources (System Manuals and Warranty)" Tab above on this page for the manufacturer's warranty document and registration process. Ask us before you order if you need the warranty confirmed for your specific application — we always reply back.
