Bigblue TL4000P 4000-Lumen Narrow-Beam Canister Light - EOD Backmount

The TL4000P EOD23 Backmount is a complete technical canister light: the TL4000P EO light head, the EOD23 battery canister and the cable that joins them. The head puts 4000 lumens into a tight 8° beam for maximum penetration, with a smooth peripheral spill. Bigblue lists it as a Tech primary light.

The EOD23 canister holds three BATCELLEOCANISTER Li-ion batteries of 88.06 Wh each, in a configuration Bigblue lists as airline approved. That gives you 12 hours at 4000 lumens, 24 at 2000, 48 at 1000 and 120 hours at 400 lumens.

The EOD23 canister has two independent cables and a mechanical on/off switch. One canister can run this light and a heated vest at the same time, two different lights, or your own custom setup. A blind plug, sold separately, protects the spare connector when you’re not using it.

This is the backmount version, set up for divers on a backmount rig. The sidemount version is the same apart from canister weight (2415 g against 2478 g here). The head rides on a 1.3 m cable and mounts on the included Adjustable Goodman Handle. A push-button switch with a battery indicator on the head steps through four power levels.

Head and canister are anodized aluminum alloy with tempered optical glass, tested to 150 meters. The charger and a PC107A protective case are in the box. Bigblue makes it in Classic Black, Royal Blue and Hot Pink; this listing is Classic Black.