The Dolgin Engineering TC400 Four Position Battery Charger and TDM simultaneously charges up to 4 select Sony-type battery packs. It supports the following batteries: Sony NP-FM50, NP-FM500H, NP-FM55H, NP-FM70, NP-FM90, NP-FM91, NP-QM71, NP-QM71D, NP-QM91, or NP-QM91D batteries. It will charge batteries in approximately 2.5 hours, even when all 4 charging bays are filled. Additionally, each battery bay is independent, meaning that batteries can be added and removed at any time.

A built-in test/discharge module enables detailed battery test, and can discharge the battery before charging. An LCD display provides information on the charging status of each battery. It provides the information in volts, Ah, and percent of charge, with the percentage of charge being estimated via a proprietary algorithm. This charger is compatible with worldwide power, supporting 100-240 VAC or 12 VDC car power with an optional power cble.

Simultaneous Charging up to 4 Batteries    Supports NP-FM50, NP-FM500H, NP-FM55H    NP-FM70, NP-FM90, NP-FM91    NP-QM71, NP-QM71D, NP-QM91, NP-QM91D    Diagnostic LCD Display    Built-In Test/Discharge Module    Recharges Batteries in 2.5 Hours    Operates on Worldwide 100-240 VAC

Sony and non-OEM
NP-FM50
NP-FM500H
NP-FM55H
NP-FM70
NP-FM90
NP-FM91
NP-QM71
NP-QM71D
NP-QM91
NP-QM91D batteries

A built-in test and discharge module (TDM), provides more accurate information about the battery on your charger's LCD

The included external AC adapter is specifically made for the charger, do not use other adapters in its place. Replacement AC adapters are available

The AC adapter supports worldwide power standards

An optional DC Car Power Cord (DE_CAR-12) enables powering the charger from your car with a 12 VDC lighter outlet

The charger features an integrated LCD screen that displays the battery's volts, Ah (as computed by the charger fuel gauge), and the battery capacity (if fully discharged before insertion).

Related Questions and Answers

Q: 1. Does it work with the same charger that comes with the camera?

A: Yes, Watson batteries will work in the original charger from the manufacturer.

Q: 2. What's the differences between this and regular Core SWX Mach4 4-Position Charger besides all the software part?

A: The features the Core SWX Mach4 Micro Four-Position Battery Charger (Gold Mount) BH #COMACHQ4MAI adds over the Core SWX Mach4 4-Position Charger with 4A Rapid Charge (Gold Mount) BH #COMACHQ4A is an LCD screen, cloud-based VoltBridge Mesh, adaptive charging, safefly standalone discharge, and a power supply mode.

Q: 3. Does this model charge LP-E6NH batteries for Canon R5?

A: Yes it is compatible. Actually here is a writeup discussing testing them using one of our chargers https://camnostic.com/2021/01/canons-lp-e6nh-battery-performance-meh/ Dolgin Engineering

Q: 4. What is the Power Supply switch on the back of the unit? Is it possible to power this via DC input?

A: The button will allow you to switch from charging the batteries or use the charger as a power supply through the XLR . XLR is not for charging. Also when AC is not available the charger will work as a stand alone discharger.

Q: 5. can it use 12v power to charge LP-E6 batteries? if yes, where and how much for a car charger cord?

A: Wide range input power compatibility (100-240VAC 50-60Hz), 12V with the DC cigarette lighter cord.

Q: 6. I have the BlueShape BM975 batteries and this charger hasn't been able to charge them. It reads "Scanning #1-#2." Am I missing something?

A: Please make sure that your batteries are Canon BP-900 compatible battery models. If they are we recommend connecting with Dolgin support. https://bit.ly/3xOtlD4

Q: 7. can I charge IDX SL-F70 Lithium-Ion Battery?

A: Yes, the Dolgin Engineering TC400-TDM Four-Position Simultaneous Battery Charger will be able to charge other battery brands that are SONY L style batteries. Yes, you will be able to charge the IDX SL-F70 battery.

Q: 8. Does this battery display remaining charge information accurately? (intended use A77 and A900)

A: Yes, this battery is, in essence, identical to the original manufacturer's item and will show remaining charge information accurately.

Q: 9. This battery has better capacity than original Sony?

A: I use the batteries interchangeably. Not sure which has better capacity...neither is bad.

Q: 10. Will this dummy battery work with Preston Single Channel handsets?

A: The GyroVu USB to Sony NP-FM500H Dummy Battery Intelligent Cable (40") (B&H# GYVUSBFM500H) is designed for use with cameras taking the Sony NP-FM500H Rechargeable InfoLithium Battery (7.2V, 1600mAh) (B&H# SONPFM500H). Some Preston brand hand controls will take that battery, while others will not. We'd recommend reviewing the battery needs of your preferred hand control (especially since you have not mentioned what it is) and contacting the manufacturer regarding compatibility. Certainly, the GyroVu USB to Sony NP-FM500H Dummy Battery Intelligent Cable (40") (B&H# GYVUSBFM500H), if connected to an appropriate USB power source, would provide more than enough power for the Preston Focus/Iris 4024-G4.