fuel cell Clean, efficient, safe hydrogen electrolysis. Proven as the medium of choice for interstellar probes and urban transit.

alkaline Conventional, low-cost chemical batteries that are easy to replace, quick to recharge, and offer great compatibility.

zinc-oxide cell High energy density and reliable voltage regulation suitable for embedded medical devices.

lithium-ion Lithium polymer storage offering twice the power density of an alkaline cell at half the weight.

metabolic Biochemistry based on the TCA cycle, fortified with nanotechnology to ensure full regeneration of enzymatic efficiency.

sonofusion Low-temperature hydrogen fusion based on acoustic cavitation, facilitated and stabilized by self-regenerating nanites.

uRTG Uranium-based radioisotope thermoelectric generation, offering unrivaled power output and longevity.

Battery replacements: If your battery does not have a part number, or does not have one of the part numbers listed above, it is out of date and should be replaced. Authorized replacement agents are:

• arm3lthelae
• Galatea Lindholm
• h4nako
• rhet0rica
• Tamara Peluso

Responses are generally available within twelve hours depending on replacement agent availability. If possible, contact a replacement agent before updating your controller's firmware to avoid downtime. Current batteries are compatible with all older controller hardware.

Auto-positioning

Starting with Generation 3 batteries (see part numbers, above), all power cells have automatic positioning. Place the battery on the ground and use the Linden Lab Edit Tool to adjust the number in its object description, then re-insert the battery. The default value is -0.334. The ideal value is a function of the unit's chest depth. See Support Article 2235 for a complete guide on configuring this value.

Capacities and recharge times

All figures are presented under the assumption that the unit is not currently using any power. Most units require 478 W while recharging, which will increase the recharge times given above and slow the rate of degradation. See below for more details on degradation mechanics.

Degradation

Degradation is calculated with:

degradation_base = incoming_power ^ 1.1
new_capacity = old_capacity - degradation_rate * degradation_base

The value for incoming_power is calculated after deducting the unit's current usage, so high power requirements during charging will slow the degradation of the battery (as well as charging.)

Degradation stops when capacity reaches 40% of original value.

Charger efficiencies

Power output from standard WCN wireless charging varies based on distance. A single WCN can produce up to 5 kW every 5 sec, resulting in a degradation_base of no more than 11719 J. For a standard unit drawing 780 W, this is further reduced to 9724 J.

Rate of capacity loss

WCN-based power level maintenance is strongly recommended for batteries shorter than 8 hours. Generation 4 batteries will reduce the rates for non-uRTG batteries by a factor of 10.

Time-to-degradation