The Problem

My battery looked full, so why did the fridge die before morning and spoil everything?

The Solution

The battery icon in Abiotic Factor is a charge-level indicator, not a runtime guarantee. A full Makeshift Battery (50 charge) powering one device drains in 250 seconds — barely enough for a 270-second night. If you power two devices on that same battery, it dies in 125 seconds. The icon only shows charge percentage, not how many devices are draining it. Here is how to stop waking up to spoiled food.

Battery Capacity (Verified from Abiotic Factor Wiki)

Drain Mechanics Every connected device drains 1 charge every 5 seconds — this is a fixed rate regardless of device type. A lamp, a fridge, a Tesla Coil, and a charger all draw the same 1 charge / 5 seconds each. The formula: 5 × TotalCharge ÷ NumberOfDevices = runtime in seconds. Night lasts 270 seconds (9 PM to 6 AM game time).

The Branch Isolation Principle Never put food storage and defense on the same battery. A Tesla Coil attack spike does not draw extra power (see power system) per-device, but every additional device halves your runtime. With 4 devices on one Makeshift Battery (50 charge), runtime drops to 62 seconds — your fridge dies before midnight. Separate into three branches:

1. Food branch — fridge only, on its own battery.
2. Utility branch — lamps, bench, chargers.
3. Defense branch — Tesla Coils, Chopinators, each on a dedicated battery.

Crafting Requirements

• Makeshift: 1 Energy Brick + 1 Coil + 2 Metal Scraps
• Industrial: 1 Power Cell + 2 Rebar + 1 Air Compressor + 2 Metal Scrap
• Carbon: 1 Industrial Battery + 1 Memory Brick + 2 Refined Carbon + 2 Leyak (see Leyak guide) Essence
• Quantum: 2 Carbon Batteries + Digital Gold + 2 Transuranic Superalloy + 3 Frozen Essence

Wiring Order Connect in this order: Socket → Plug Strip → Battery → Device. Do not daisy-chain batteries in series — it is inefficient. Place Plug Strips before batteries to split one wall socket into multiple battery branches.

Overnight Testing Protocol

1. Charge all batteries to full.
2. Turn on the exact load you expect overnight.
3. Sleep (see sleep guide) through the night.
4. Check battery levels at morning — if below 20%, add capacity or reduce device count on that branch.

Source: Abiotic Factor Official Wiki (Battery page, Power guide), TechRaptor Abiotic Factor Power Guide

Step-by-Step

1. List every powered device grouped by priority: food (fridge), utilities (lamps, bench), defenses.
2. Put the fridge on a dedicated battery branch — a Makeshift Battery (50 charge) cannot power a fridge plus anything else through the 270-second night.
3. Connect: Socket → Plug Strip → Battery → Device. Put Plug Strips before batteries to create independent branches.
4. Calculate runtime using the formula: 5 × battery charge ÷ number of devices = seconds of power. One device on a 50-charge battery = 250 seconds.
5. Use an Industrial Battery (100 charge) minimum for the food branch — it powers one device for 500 seconds, well through the 270-second night.
6. Place nonessential lights behind a photosensitive switch so they do not drain batteries during the day.
7. Run an overnight test before storing rare food or portal loot in a powered fridge.
8. Label each branch (food = green, utility = yellow, defense = red) to prevent accidental cross-connection later.

Common Mistakes

• Treating a full battery icon as proof the branch can survive the night — the icon shows charge level, not runtime under load or device count.
• Connecting multiple devices to one battery without calculating: each additional device cuts runtime in half.
• Using a Makeshift Battery (50 charge) for critical storage — it cannot carry a single device through the full 270-second night.
• Adding another fridge or charger to a branch without adding battery capacity or recalculating.